diff --git a/app/celery/tasks.py b/app/celery/tasks.py
index 28eae3556..d3ccbdfc4 100644
--- a/app/celery/tasks.py
+++ b/app/celery/tasks.py
@@ -375,20 +375,6 @@ def send_email(service_id, notification_id, from_address, encrypted_notification
         current_app.logger.exception(e)
 
 
-@notify_celery.task(name='send-sms-code')
-def send_sms_code(encrypted_verification):
-    provider = provider_to_use('sms', 'send-sms-code')
-
-    verification_message = encryption.decrypt(encrypted_verification)
-    try:
-        provider.send_sms(validate_and_format_phone_number(verification_message['to']),
-                          "{} is your Notify authentication code".format(
-                              verification_message['secret_code']),
-                          'send-sms-code')
-    except SmsClientException as e:
-        current_app.logger.exception(e)
-
-
 # TODO: when placeholders in templates work, this will be a real template
 def invitation_template(user_name, service_name, url, expiry_date):
     from string import Template
diff --git a/tests/app/celery/test_tasks.py b/tests/app/celery/test_tasks.py
index c2077d97e..7034368d8 100644
--- a/tests/app/celery/test_tasks.py
+++ b/tests/app/celery/test_tasks.py
@@ -6,7 +6,6 @@ from notifications_utils.recipients import validate_phone_number, format_phone_n
 
 from app.celery.tasks import (
     send_sms,
-    send_sms_code,
     send_email,
     process_job,
     email_invited_user,
@@ -898,33 +897,6 @@ def test_should_not_send_email_if_db_peristance_failed(sample_email_template, mo
     assert 'No row was found for one' in str(e.value)
 
 
-def test_should_send_sms_code(mocker):
-    notification = {'to': '+447234123123',
-                    'secret_code': '12345'}
-
-    encrypted_notification = encryption.encrypt(notification)
-
-    mocker.patch('app.mmg_client.send_sms')
-    send_sms_code(encrypted_notification)
-    mmg_client.send_sms.assert_called_once_with(
-        format_phone_number(validate_phone_number(notification['to'])),
-        "{} is your Notify authentication code".format(notification['secret_code']),
-        'send-sms-code')
-
-
-def test_should_throw_mmg_client_exception(mocker):
-    notification = {'to': '+447234123123',
-                    'secret_code': '12345'}
-
-    encrypted_notification = encryption.encrypt(notification)
-    mocker.patch('app.mmg_client.send_sms', side_effect=MMGClientException(mmg_error))
-    send_sms_code(encrypted_notification)
-    mmg_client.send_sms.assert_called_once_with(
-        format_phone_number(validate_phone_number(notification['to'])),
-        "{} is your Notify authentication code".format(notification['secret_code']),
-        'send-sms-code')
-
-
 def test_email_invited_user_should_send_email(notify_api, mocker):
     with notify_api.test_request_context():
         invitation = {'to': 'new_person@it.gov.uk',