diff --git a/app/billing/billing_schemas.py b/app/billing/billing_schemas.py
index 9884be11f..966c274a0 100644
--- a/app/billing/billing_schemas.py
+++ b/app/billing/billing_schemas.py
@@ -1,5 +1,7 @@
 from datetime import datetime
 
+from app.enums import NotificationType
+
 create_or_update_free_sms_fragment_limit_schema = {
     "$schema": "http://json-schema.org/draft-07/schema#",
     "description": "POST annual billing schema",
diff --git a/app/celery/nightly_tasks.py b/app/celery/nightly_tasks.py
index 3a4e8fa59..1c208104b 100644
--- a/app/celery/nightly_tasks.py
+++ b/app/celery/nightly_tasks.py
@@ -25,7 +25,8 @@ from app.dao.notifications_dao import (
 from app.dao.service_data_retention_dao import (
     fetch_service_data_retention_for_all_services_by_notification_type,
 )
-from app.models import FactProcessingTime, NotificationType
+from app.enums import NotificationType
+from app.models import FactProcessingTime
 from app.utils import get_midnight_in_utc
 
 
diff --git a/app/celery/reporting_tasks.py b/app/celery/reporting_tasks.py
index c7c60f1cf..aa8f6fece 100644
--- a/app/celery/reporting_tasks.py
+++ b/app/celery/reporting_tasks.py
@@ -8,7 +8,7 @@ from app.cronitor import cronitor
 from app.dao.fact_billing_dao import fetch_billing_data_for_day, update_fact_billing
 from app.dao.fact_notification_status_dao import update_fact_notification_status
 from app.dao.notifications_dao import get_service_ids_with_notifications_on_date
-from app.models import NotificationType
+from app.enums import NotificationType
 
 
 @notify_celery.task(name="create-nightly-billing")
diff --git a/app/celery/research_mode_tasks.py b/app/celery/research_mode_tasks.py
index c662da851..58f34c6a6 100644
--- a/app/celery/research_mode_tasks.py
+++ b/app/celery/research_mode_tasks.py
@@ -6,7 +6,7 @@ from requests import HTTPError, request
 from app.celery.process_ses_receipts_tasks import process_ses_results
 from app.config import QueueNames
 from app.dao.notifications_dao import get_notification_by_id
-from app.models import NotificationType
+from app.enums import NotificationType
 
 temp_fail = "2028675303"
 perm_fail = "2028675302"
diff --git a/app/celery/scheduled_tasks.py b/app/celery/scheduled_tasks.py
index 314e1f310..fb0f39caa 100644
--- a/app/celery/scheduled_tasks.py
+++ b/app/celery/scheduled_tasks.py
@@ -34,13 +34,8 @@ from app.dao.services_dao import (
 )
 from app.dao.users_dao import delete_codes_older_created_more_than_a_day_ago
 from app.delivery.send_to_providers import provider_to_use
-from app.models import (
-    JOB_STATUS_ERROR,
-    JOB_STATUS_IN_PROGRESS,
-    JOB_STATUS_PENDING,
-    Job,
-    NotificationType,
-)
+from app.enums import NotificationType
+from app.models import JOB_STATUS_ERROR, JOB_STATUS_IN_PROGRESS, JOB_STATUS_PENDING, Job
 from app.notifications.process_notifications import send_notification_to_queue
 
 MAX_NOTIFICATION_FAILS = 10000
diff --git a/app/celery/tasks.py b/app/celery/tasks.py
index 4b7d5ccac..34b1f13e0 100644
--- a/app/celery/tasks.py
+++ b/app/celery/tasks.py
@@ -20,13 +20,13 @@ from app.dao.service_email_reply_to_dao import dao_get_reply_to_by_id
 from app.dao.service_inbound_api_dao import get_service_inbound_api_for_service
 from app.dao.service_sms_sender_dao import dao_get_service_sms_senders_by_id
 from app.dao.templates_dao import dao_get_template_by_id
+from app.enums import NotificationType
 from app.models import (
     JOB_STATUS_CANCELLED,
     JOB_STATUS_FINISHED,
     JOB_STATUS_IN_PROGRESS,
     JOB_STATUS_PENDING,
     KEY_TYPE_NORMAL,
-    NotificationType,
 )
 from app.notifications.process_notifications import persist_notification
 from app.notifications.validators import check_service_over_total_message_limit
diff --git a/app/celery/test_key_tasks.py b/app/celery/test_key_tasks.py
index a7fdda110..f18976a5f 100644
--- a/app/celery/test_key_tasks.py
+++ b/app/celery/test_key_tasks.py
@@ -6,7 +6,7 @@ from requests import HTTPError, request
 from app.celery.process_ses_receipts_tasks import process_ses_results
 from app.config import QueueNames
 from app.dao.notifications_dao import get_notification_by_id
-from app.models import NotificationType
+from app.enums import NotificationType
 
 temp_fail = "2028675303"
 perm_fail = "2028675302"
diff --git a/app/clients/__init__.py b/app/clients/__init__.py
index 70449b45d..66e014354 100644
--- a/app/clients/__init__.py
+++ b/app/clients/__init__.py
@@ -1,9 +1,10 @@
 from abc import abstractmethod
 from typing import Protocol
 
-from app.models import NotificationType
 from botocore.config import Config
 
+from app.enums import NotificationType
+
 AWS_CLIENT_CONFIG = Config(
     # This config is required to enable S3 to connect to FIPS-enabled
     # endpoints.  See https://aws.amazon.com/compliance/fips/ for more
@@ -54,7 +55,10 @@ class NotificationProviderClients(object):
         return self.email_clients.get(name)
 
     def get_client_by_name_and_type(self, name, notification_type):
-        assert notification_type in {NotificationType.EMAIL, NotificationType.SMS}  # nosec B101
+        assert notification_type in {
+            NotificationType.EMAIL,
+            NotificationType.SMS,
+        }  # nosec B101
 
         if notification_type == NotificationType.EMAIL:
             return self.get_email_client(name)
diff --git a/app/commands.py b/app/commands.py
index 4d084e845..7541766af 100644
--- a/app/commands.py
+++ b/app/commands.py
@@ -49,6 +49,7 @@ from app.dao.users_dao import (
     delete_user_verify_codes,
     get_user_by_email,
 )
+from app.enums import NotificationType
 from app.models import (
     KEY_TYPE_TEST,
     NOTIFICATION_CREATED,
@@ -56,7 +57,6 @@ from app.models import (
     Domain,
     EmailBranding,
     Notification,
-    NotificationType,
     Organization,
     Service,
     Template,
diff --git a/app/dao/fact_billing_dao.py b/app/dao/fact_billing_dao.py
index 06b537643..696022619 100644
--- a/app/dao/fact_billing_dao.py
+++ b/app/dao/fact_billing_dao.py
@@ -8,6 +8,7 @@ from sqlalchemy.sql.expression import case, literal
 from app import db
 from app.dao.date_util import get_calendar_year_dates, get_calendar_year_for_datetime
 from app.dao.organization_dao import dao_get_organization_live_services
+from app.enums import NotificationType
 from app.models import (
     KEY_TYPE_NORMAL,
     KEY_TYPE_TEAM,
@@ -17,7 +18,6 @@ from app.models import (
     FactBilling,
     NotificationAllTimeView,
     NotificationHistory,
-    NotificationType,
     Organization,
     Rate,
     Service,
diff --git a/app/dao/fact_notification_status_dao.py b/app/dao/fact_notification_status_dao.py
index 68284436b..c6c6b06dd 100644
--- a/app/dao/fact_notification_status_dao.py
+++ b/app/dao/fact_notification_status_dao.py
@@ -7,6 +7,7 @@ from sqlalchemy.types import DateTime, Integer
 
 from app import db
 from app.dao.dao_utils import autocommit
+from app.enums import NotificationType
 from app.models import (
     KEY_TYPE_NORMAL,
     KEY_TYPE_TEAM,
@@ -23,7 +24,6 @@ from app.models import (
     NOTIFICATION_TEMPORARY_FAILURE,
     FactNotificationStatus,
     Notification,
-    NotificationType,
     NotificationAllTimeView,
     Service,
     Template,
@@ -468,7 +468,8 @@ def get_total_notifications_for_date_range(start_date, end_date):
                 case(
                     [
                         (
-                            FactNotificationStatus.notification_type == NotificationType.EMAIL,
+                            FactNotificationStatus.notification_type
+                            == NotificationType.EMAIL,
                             FactNotificationStatus.notification_count,
                         )
                     ],
@@ -479,7 +480,8 @@ def get_total_notifications_for_date_range(start_date, end_date):
                 case(
                     [
                         (
-                            FactNotificationStatus.notification_type == NotificationType.SMS,
+                            FactNotificationStatus.notification_type
+                            == NotificationType.SMS,
                             FactNotificationStatus.notification_count,
                         )
                     ],
diff --git a/app/dao/inbound_sms_dao.py b/app/dao/inbound_sms_dao.py
index 5143746d9..9b33ff0c8 100644
--- a/app/dao/inbound_sms_dao.py
+++ b/app/dao/inbound_sms_dao.py
@@ -5,13 +5,8 @@ from sqlalchemy.orm import aliased
 
 from app import db
 from app.dao.dao_utils import autocommit
-from app.models import (
-    InboundSms,
-    InboundSmsHistory,
-    NotificationType,
-    Service,
-    ServiceDataRetention,
-)
+from app.enums import NotificationType
+from app.models import InboundSms, InboundSmsHistory, Service, ServiceDataRetention
 from app.utils import midnight_n_days_ago
 
 
diff --git a/app/dao/notifications_dao.py b/app/dao/notifications_dao.py
index 42ac8671c..a144ee7cc 100644
--- a/app/dao/notifications_dao.py
+++ b/app/dao/notifications_dao.py
@@ -16,6 +16,7 @@ from werkzeug.datastructures import MultiDict
 
 from app import create_uuid, db
 from app.dao.dao_utils import autocommit
+from app.enums import NotificationType
 from app.models import (
     KEY_TYPE_TEST,
     NOTIFICATION_CREATED,
@@ -29,7 +30,6 @@ from app.models import (
     FactNotificationStatus,
     Notification,
     NotificationHistory,
-    NotificationType,
 )
 from app.utils import (
     escape_special_characters,
diff --git a/app/dao/provider_details_dao.py b/app/dao/provider_details_dao.py
index d98aadcd2..0cb22adcd 100644
--- a/app/dao/provider_details_dao.py
+++ b/app/dao/provider_details_dao.py
@@ -5,13 +5,8 @@ from sqlalchemy import asc, desc, func
 
 from app import db
 from app.dao.dao_utils import autocommit
-from app.models import (
-    FactBilling,
-    NotificationType,
-    ProviderDetails,
-    ProviderDetailsHistory,
-    User,
-)
+from app.enums import NotificationType
+from app.models import FactBilling, ProviderDetails, ProviderDetailsHistory, User
 
 
 def get_provider_details_by_id(provider_details_id):
@@ -62,7 +57,8 @@ def _get_sms_providers_for_update(time_threshold):
     # get current priority of both providers
     q = (
         ProviderDetails.query.filter(
-            ProviderDetails.notification_type == NotificationType.SMS, ProviderDetails.active
+            ProviderDetails.notification_type == NotificationType.SMS,
+            ProviderDetails.active,
         )
         .with_for_update()
         .all()
diff --git a/app/dao/services_dao.py b/app/dao/services_dao.py
index 07ba4b1e0..e9f346735 100644
--- a/app/dao/services_dao.py
+++ b/app/dao/services_dao.py
@@ -13,6 +13,7 @@ from app.dao.organization_dao import dao_get_organization_by_email_address
 from app.dao.service_sms_sender_dao import insert_service_sms_sender
 from app.dao.service_user_dao import dao_get_service_user
 from app.dao.template_folder_dao import dao_get_valid_template_folders_by_id
+from app.enums import NotificationType
 from app.models import (
     KEY_TYPE_TEST,
     NOTIFICATION_PERMANENT_FAILURE,
@@ -24,7 +25,6 @@ from app.models import (
     Job,
     Notification,
     NotificationHistory,
-    NotificationType,
     Organization,
     Permission,
     Service,
@@ -106,7 +106,8 @@ def dao_fetch_live_services_data():
             case(
                 [
                     (
-                        this_year_ft_billing.c.notification_type == NotificationType.EMAIL,
+                        this_year_ft_billing.c.notification_type
+                        == NotificationType.EMAIL,
                         func.sum(this_year_ft_billing.c.notifications_sent),
                     )
                 ],
@@ -115,7 +116,8 @@ def dao_fetch_live_services_data():
             case(
                 [
                     (
-                        this_year_ft_billing.c.notification_type == NotificationType.SMS,
+                        this_year_ft_billing.c.notification_type
+                        == NotificationType.SMS,
                         func.sum(this_year_ft_billing.c.notifications_sent),
                     )
                 ],
diff --git a/app/dao/uploads_dao.py b/app/dao/uploads_dao.py
index 200d41805..1f1c5138b 100644
--- a/app/dao/uploads_dao.py
+++ b/app/dao/uploads_dao.py
@@ -5,13 +5,13 @@ from flask import current_app
 from sqlalchemy import String, and_, desc, func, literal, text
 
 from app import db
+from app.enums import NotificationType
 from app.models import (
     JOB_STATUS_CANCELLED,
     JOB_STATUS_SCHEDULED,
     NOTIFICATION_CANCELLED,
     Job,
     Notification,
-    NotificationType,
     ServiceDataRetention,
     Template,
 )
diff --git a/app/delivery/send_to_providers.py b/app/delivery/send_to_providers.py
index 49c98b50a..be9d295da 100644
--- a/app/delivery/send_to_providers.py
+++ b/app/delivery/send_to_providers.py
@@ -15,6 +15,7 @@ from app.celery.test_key_tasks import send_email_response, send_sms_response
 from app.dao.email_branding_dao import dao_get_email_branding_by_id
 from app.dao.notifications_dao import dao_update_notification
 from app.dao.provider_details_dao import get_provider_details_by_notification_type
+from app.enums import NotificationType
 from app.exceptions import NotificationTechnicalFailureException
 from app.models import (
     BRANDING_BOTH,
@@ -23,7 +24,6 @@ from app.models import (
     NOTIFICATION_SENDING,
     NOTIFICATION_STATUS_TYPES_COMPLETED,
     NOTIFICATION_TECHNICAL_FAILURE,
-    NotificationType,
 )
 from app.serialised_models import SerialisedService, SerialisedTemplate
 
diff --git a/app/enums.py b/app/enums.py
new file mode 100644
index 000000000..3a6ce9355
--- /dev/null
+++ b/app/enums.py
@@ -0,0 +1,69 @@
+from enum import Enum
+
+
+class TemplateType(Enum):
+    SMS = "sms"
+    EMAIL = "email"
+    LETTER = "letter"
+
+
+class NotificationType(Enum):
+    SMS = "sms"
+    EMAIL = "email"
+    LETTER = "letter"
+
+
+class UserAuthType(Enum):
+    SMS = "sms_auth"
+    EMAIL = "email_auth"
+    WEBAUTHN = "webauthn_auth"
+
+
+class ServiceCallbackType(Enum):
+    # TODO: Should ServiceCallbackApi.callback_type be changed to use this?
+    DELIVERY_STATUS = "delivery_status"
+    COMPLAINT = "complaint"
+
+
+class ServicePermissionType(Enum):
+    EMAIL = "email"
+    SMS = "sms"
+    INTERNATIONAL_SMS = "international_sms"
+    INBOUND_SMS = "inbound_sms"
+    SCHEDULE_NOTIFICATIONS = "schedule_notifications"
+    EMAIL_AUTH = "email_auth"
+    UPLOAD_DOCUMENT = "upload_document"
+    EDIT_FOLDER_PERMISSIONS = "edit_folder_permissions"
+
+
+class GuestListRecipientType(Enum):
+    MOBILE = "mobile"
+    EMAIL = "email"
+
+
+class KeyType(Enum):
+    NORMAL = "normal"
+    TEAM = "team"
+    TEST = "test"
+
+
+class JobStatusType(Enum):
+    PENDING = "pending"
+    IN_PROGRESS = "in progress"
+    FINISHED = "finished"
+    SENDING_LIMITS_EXCEEDED = "sending limits exceeded"
+    SCHEDULED = "scheduled"
+    CANCELLED = "cancelled"
+    READY_TO_SEND = "ready to send"
+    SENT_TO_DVLA = "sent to dvla"
+    ERROR = "error"
+
+
+class AgreementType(Enum):
+    MOU = "MOU"
+    IAA = "IAA"
+
+
+class AgreementStatus(Enum):
+    ACTIVE = "active"
+    EXPIRED = "expired"
diff --git a/app/inbound_sms/rest.py b/app/inbound_sms/rest.py
index 2a6f16277..7f8742a16 100644
--- a/app/inbound_sms/rest.py
+++ b/app/inbound_sms/rest.py
@@ -9,9 +9,9 @@ from app.dao.inbound_sms_dao import (
 from app.dao.service_data_retention_dao import (
     fetch_service_data_retention_by_notification_type,
 )
+from app.enums import NotificationType
 from app.errors import register_errors
 from app.inbound_sms.inbound_sms_schemas import get_inbound_sms_for_service_schema
-from app.models import NotificationType
 from app.schema_validation import validate
 
 inbound_sms = Blueprint(
diff --git a/app/models.py b/app/models.py
index a656a926c..90dea83a6 100644
--- a/app/models.py
+++ b/app/models.py
@@ -21,6 +21,13 @@ from sqlalchemy.orm import validates
 from sqlalchemy.orm.collections import attribute_mapped_collection
 
 from app import db, encryption
+from app.enums import (  # JobStatusType,; KeyType,; ServicePermissionType,; UserAuthType,
+    AgreementStatus,
+    AgreementType,
+    GuestListRecipientType,
+    NotificationType,
+    TemplateType,
+)
 from app.hashing import check_hash, hashpw
 from app.history_meta import Versioned
 from app.utils import (
@@ -29,19 +36,6 @@ from app.utils import (
     get_dt_string_or_none,
 )
 
-
-class TemplateType(Enum):
-    SMS = "sms"
-    EMAIL = "email"
-    LETTER = "letter"
-
-
-class NotificationType(Enum):
-    SMS = "sms"
-    EMAIL = "email"
-    LETTER = "letter"
-
-
 NORMAL = "normal"
 PRIORITY = "priority"
 TEMPLATE_PROCESS_TYPE = [NORMAL, PRIORITY]
@@ -53,28 +47,18 @@ class TemplateProcessType(Enum):
     PRIORITY = "priority"
 
 
+# TODO: Change this
 SMS_AUTH_TYPE = "sms_auth"
 EMAIL_AUTH_TYPE = "email_auth"
 WEBAUTHN_AUTH_TYPE = "webauthn_auth"
 USER_AUTH_TYPES = [SMS_AUTH_TYPE, EMAIL_AUTH_TYPE, WEBAUTHN_AUTH_TYPE]
 
 
-class UserAuthType(Enum):
-    # TODO: Should User.auth_type be changed to use this?
-    SMS = "sms_auth"
-    EMAIL = "email_auth"
-    WEBAUTHN = "webauthn_auth"
-
-
+# TODO: Change this
 DELIVERY_STATUS_CALLBACK_TYPE = "delivery_status"
 COMPLAINT_CALLBACK_TYPE = "complaint"
 SERVICE_CALLBACK_TYPES = [DELIVERY_STATUS_CALLBACK_TYPE, COMPLAINT_CALLBACK_TYPE]
-
-
-# class ServiceCallbackType(Enum):
-#     # TODO: Should ServiceCallbackApi.callback_type be changed to use this?
-#     DELIVERY_STATUS = "delivery_status"
-#     COMPLAINT = "complaint"
+# Need to import ServiceCallbackType from app.enums
 
 
 def filter_null_value_fields(obj):
@@ -290,6 +274,7 @@ user_folder_permissions = db.Table(
 )
 
 
+# TODO: Change this
 BRANDING_GOVUK = "govuk"  # Deprecated outside migrations
 BRANDING_ORG = "org"
 BRANDING_BOTH = "both"
@@ -358,17 +343,7 @@ service_email_branding = db.Table(
 )
 
 
-class ServicePermissionType(Enum):
-    EMAIL = "email"
-    SMS = "sms"
-    INTERNATIONAL_SMS = "international_sms"
-    INBOUND_SMS = "inbound_sms"
-    SCHEDULE_NOTIFICATIONS = "schedule_notifications"
-    EMAIL_AUTH = "email_auth"
-    UPLOAD_DOCUMENT = "upload_document"
-    EDIT_FOLDER_PERMISSIONS = "edit_folder_permissions"
-
-
+# TODO: This need to be changed
 class ServicePermissionTypes(db.Model):
     __tablename__ = "service_permission_types"
 
@@ -386,6 +361,7 @@ class Domain(db.Model):
     )
 
 
+# TODO: Change this
 ORGANIZATION_TYPES = ["federal", "state", "other"]
 
 
@@ -811,15 +787,6 @@ class ServicePermission(db.Model):
         )
 
 
-# MOBILE_TYPE = "mobile"
-# EMAIL_TYPE = "email"
-
-
-class GuestListRecipientType(Enum):
-    MOBILE = "mobile"
-    EMAIL = "email"
-
-
 guest_list_recipient_types = db.Enum(GuestListRecipientType, name="recipient_type")
 
 
@@ -1007,18 +974,12 @@ class ApiKey(db.Model, Versioned):
             self._secret = encryption.encrypt(str(secret))
 
 
+# TODO: This needs to be changed
 KEY_TYPE_NORMAL = "normal"
 KEY_TYPE_TEAM = "team"
 KEY_TYPE_TEST = "test"
 
 
-class KeyType(Enum):
-    # TODO: Should Key Types be rewritten to use this?
-    NORMAL = "normal"
-    TEAM = "team"
-    TEST = "test"
-
-
 class KeyTypes(db.Model):
     __tablename__ = "key_types"
 
@@ -1373,19 +1334,6 @@ JOB_STATUS_TYPES = [
 ]
 
 
-class JobStatusType(Enum):
-    # TODO: Should Job.job_status be changed to use this?
-    PENDING = "pending"
-    IN_PROGRESS = "in progress"
-    FINISHED = "finished"
-    SENDING_LIMITS_EXCEEDED = "sending limits exceeded"
-    SCHEDULED = "scheduled"
-    CANCELLED = "cancelled"
-    READY_TO_SEND = "ready to send"
-    SENT_TO_DVLA = "sent to dvla"
-    ERROR = "error"
-
-
 class JobStatus(db.Model):
     __tablename__ = "job_status"
 
@@ -1986,6 +1934,7 @@ INVITED_USER_STATUS_TYPES = [
     INVITE_CANCELLED,
     INVITE_EXPIRED,
 ]
+# TODO: Change these
 
 
 class InviteStatusType(db.Model):
@@ -2091,6 +2040,7 @@ PERMISSION_LIST = [
     PLATFORM_ADMIN,
     VIEW_ACTIVITY,
 ]
+# TODO: Change These
 
 
 class Permission(db.Model):
@@ -2442,16 +2392,6 @@ class WebauthnCredential(db.Model):
         }
 
 
-class AgreementType(Enum):
-    MOU = "MOU"
-    IAA = "IAA"
-
-
-class AgreementStatus(Enum):
-    ACTIVE = "active"
-    EXPIRED = "expired"
-
-
 class Agreement(db.Model):
     __tablename__ = "agreements"
     id = db.Column(
diff --git a/app/notifications/process_notifications.py b/app/notifications/process_notifications.py
index 24a24bc8d..b9474508f 100644
--- a/app/notifications/process_notifications.py
+++ b/app/notifications/process_notifications.py
@@ -16,12 +16,8 @@ from app.dao.notifications_dao import (
     dao_create_notification,
     dao_delete_notifications_by_id,
 )
-from app.models import (
-    KEY_TYPE_TEST,
-    NOTIFICATION_CREATED,
-    Notification,
-    NotificationType,
-)
+from app.enums import NotificationType
+from app.models import KEY_TYPE_TEST, NOTIFICATION_CREATED, Notification
 from app.v2.errors import BadRequestError
 
 
diff --git a/app/notifications/rest.py b/app/notifications/rest.py
index b1ea4e837..0d0b70db7 100644
--- a/app/notifications/rest.py
+++ b/app/notifications/rest.py
@@ -4,8 +4,9 @@ from notifications_utils import SMS_CHAR_COUNT_LIMIT
 from app import api_user, authenticated_service
 from app.config import QueueNames
 from app.dao import notifications_dao
+from app.enums import NotificationType
 from app.errors import InvalidRequest, register_errors
-from app.models import KEY_TYPE_TEAM, PRIORITY, NotificationType
+from app.models import KEY_TYPE_TEAM, PRIORITY
 from app.notifications.process_notifications import (
     persist_notification,
     send_notification_to_queue,
diff --git a/app/notifications/validators.py b/app/notifications/validators.py
index 6e65f6658..20bd2bc07 100644
--- a/app/notifications/validators.py
+++ b/app/notifications/validators.py
@@ -15,14 +15,8 @@ from app import redis_store
 from app.dao.notifications_dao import dao_get_notification_count_for_service
 from app.dao.service_email_reply_to_dao import dao_get_reply_to_by_id
 from app.dao.service_sms_sender_dao import dao_get_service_sms_senders_by_id
-from app.models import (
-    KEY_TYPE_TEAM,
-    KEY_TYPE_TEST,
-    NotificationType,
-    ServicePermission,
-    ServicePermissionType,
-    TemplateType,
-)
+from app.enums import NotificationType, ServicePermissionType, TemplateType
+from app.models import KEY_TYPE_TEAM, KEY_TYPE_TEST, ServicePermission
 from app.notifications.process_notifications import create_content_for_notification
 from app.serialised_models import SerialisedTemplate
 from app.service.utils import service_allowed_to_send_to
diff --git a/app/organization/invite_rest.py b/app/organization/invite_rest.py
index 69587ea3e..2de961e43 100644
--- a/app/organization/invite_rest.py
+++ b/app/organization/invite_rest.py
@@ -12,8 +12,9 @@ from app.dao.invited_org_user_dao import (
     save_invited_org_user,
 )
 from app.dao.templates_dao import dao_get_template_by_id
+from app.enums import NotificationType
 from app.errors import InvalidRequest, register_errors
-from app.models import KEY_TYPE_NORMAL, InvitedOrganizationUser, NotificationType
+from app.models import KEY_TYPE_NORMAL, InvitedOrganizationUser
 from app.notifications.process_notifications import (
     persist_notification,
     send_notification_to_queue,
diff --git a/app/performance_platform/total_sent_notifications.py b/app/performance_platform/total_sent_notifications.py
index 514d32096..3d8806b7b 100644
--- a/app/performance_platform/total_sent_notifications.py
+++ b/app/performance_platform/total_sent_notifications.py
@@ -2,7 +2,7 @@ from app import performance_platform_client
 from app.dao.fact_notification_status_dao import (
     get_total_sent_notifications_for_day_and_type,
 )
-from app.models import NotificationType
+from app.enums import NotificationType
 
 
 # TODO: is this obsolete? it doesn't seem to be used anywhere
@@ -20,7 +20,9 @@ def send_total_notifications_sent_for_day_stats(start_time, notification_type, c
 
 # TODO: is this obsolete? it doesn't seem to be used anywhere
 def get_total_sent_notifications_for_day(day):
-    email_count = get_total_sent_notifications_for_day_and_type(day, NotificationType.EMAIL)
+    email_count = get_total_sent_notifications_for_day_and_type(
+        day, NotificationType.EMAIL
+    )
     sms_count = get_total_sent_notifications_for_day_and_type(day, NotificationType.SMS)
 
     return {
diff --git a/app/service/send_notification.py b/app/service/send_notification.py
index f1da3ac67..8f767e36a 100644
--- a/app/service/send_notification.py
+++ b/app/service/send_notification.py
@@ -6,7 +6,8 @@ from app.dao.service_sms_sender_dao import dao_get_service_sms_senders_by_id
 from app.dao.services_dao import dao_fetch_service_by_id
 from app.dao.templates_dao import dao_get_template_by_id_and_service_id
 from app.dao.users_dao import get_user_by_id
-from app.models import KEY_TYPE_NORMAL, PRIORITY, NotificationType
+from app.enums import NotificationType
+from app.models import KEY_TYPE_NORMAL, PRIORITY
 from app.notifications.process_notifications import (
     persist_notification,
     send_notification_to_queue,
diff --git a/app/service/service_data_retention_schema.py b/app/service/service_data_retention_schema.py
index 7490519f5..da732c284 100644
--- a/app/service/service_data_retention_schema.py
+++ b/app/service/service_data_retention_schema.py
@@ -1,4 +1,4 @@
-from app.models import NotificationType
+from app.enums import NotificationType
 
 add_service_data_retention_request = {
     "$schema": "http://json-schema.org/draft-07/schema#",
@@ -7,7 +7,9 @@ add_service_data_retention_request = {
     "type": "object",
     "properties": {
         "days_of_retention": {"type": "integer"},
-        "notification_type": {"enum": [NotificationType.SMS.value, NotificationType.EMAIL.value]},
+        "notification_type": {
+            "enum": [NotificationType.SMS.value, NotificationType.EMAIL.value]
+        },
     },
     "required": ["days_of_retention", "notification_type"],
 }
diff --git a/app/service_invite/rest.py b/app/service_invite/rest.py
index f7e32339d..9c4dcc972 100644
--- a/app/service_invite/rest.py
+++ b/app/service_invite/rest.py
@@ -14,8 +14,9 @@ from app.dao.invited_user_dao import (
     save_invited_user,
 )
 from app.dao.templates_dao import dao_get_template_by_id
+from app.enums import NotificationType
 from app.errors import InvalidRequest, register_errors
-from app.models import INVITE_PENDING, KEY_TYPE_NORMAL, NotificationType, Service
+from app.models import INVITE_PENDING, KEY_TYPE_NORMAL, Service
 from app.notifications.process_notifications import (
     persist_notification,
     send_notification_to_queue,
diff --git a/app/user/rest.py b/app/user/rest.py
index d8b455d4c..3ac1b1d18 100644
--- a/app/user/rest.py
+++ b/app/user/rest.py
@@ -32,15 +32,9 @@ from app.dao.users_dao import (
     update_user_password,
     use_user_code,
 )
+from app.enums import NotificationType, TemplateType, VerifyCodeType
 from app.errors import InvalidRequest, register_errors
-from app.models import (
-    KEY_TYPE_NORMAL,
-    NotificationType,
-    Permission,
-    Service,
-    TemplateType,
-    VerifyCodeType,
-)
+from app.models import KEY_TYPE_NORMAL, Permission, Service
 from app.notifications.process_notifications import (
     persist_notification,
     send_notification_to_queue,
diff --git a/app/utils.py b/app/utils.py
index eea303250..fd2f0a393 100644
--- a/app/utils.py
+++ b/app/utils.py
@@ -78,7 +78,8 @@ def get_month_from_utc_column(column):
 
 
 def get_public_notify_type_text(notify_type, plural=False):
-    from app.models import UPLOAD_DOCUMENT, NotificationType
+    from app.enums import NotificationType
+    from app.models import UPLOAD_DOCUMENT
 
     notify_type_text = notify_type
     if notify_type == NotificationType.SMS:
diff --git a/app/v2/notifications/post_notifications.py b/app/v2/notifications/post_notifications.py
index 1af6e1068..0226eb911 100644
--- a/app/v2/notifications/post_notifications.py
+++ b/app/v2/notifications/post_notifications.py
@@ -10,13 +10,8 @@ from app import api_user, authenticated_service, document_download_client, encry
 from app.celery.tasks import save_api_email, save_api_sms
 from app.clients.document_download import DocumentDownloadError
 from app.config import QueueNames
-from app.models import (
-    KEY_TYPE_NORMAL,
-    NOTIFICATION_CREATED,
-    PRIORITY,
-    Notification,
-    NotificationType,
-)
+from app.enums import NotificationType
+from app.models import KEY_TYPE_NORMAL, NOTIFICATION_CREATED, PRIORITY, Notification
 from app.notifications.process_notifications import (
     persist_notification,
     send_notification_to_queue_detached,