diff --git a/app/broadcast_areas/models.py b/app/broadcast_areas/models.py
index d9286988a..d3663df48 100644
--- a/app/broadcast_areas/models.py
+++ b/app/broadcast_areas/models.py
@@ -8,21 +8,17 @@ from rtreelib import Rect
 from werkzeug.utils import cached_property
 
 from app.formatters import square_metres_to_square_miles
+from app.models import SortByNameMixin
 
 from .populations import CITY_OF_LONDON
 from .repo import BroadcastAreasRepository, rtree_index
 
 
-class SortableMixin:
+class IdEqualityMixin:
 
     def __repr__(self):
         return f'{self.__class__.__name__}(<{self.id}>)'
 
-    def __lt__(self, other):
-        # Implementing __lt__ means any classes inheriting from this
-        # method are sortable
-        return self.name < other.name
-
     def __eq__(self, other):
         return self.id == other.id
 
@@ -79,7 +75,7 @@ class BaseBroadcastArea(ABC):
         return max(500, min(estimated_bleed, 5000))
 
 
-class BroadcastArea(BaseBroadcastArea, SortableMixin):
+class BroadcastArea(BaseBroadcastArea, IdEqualityMixin, SortByNameMixin):
 
     def __init__(self, row):
         self.id, self.name, self._count_of_phones, self.library_id = row
@@ -224,7 +220,7 @@ class CustomBroadcastAreas(SerialisedModelCollection):
         )
 
 
-class BroadcastAreaLibrary(SerialisedModelCollection, SortableMixin, GetItemByIdMixin):
+class BroadcastAreaLibrary(SerialisedModelCollection, SortByNameMixin, IdEqualityMixin, GetItemByIdMixin):
 
     model = BroadcastArea
 
diff --git a/app/models/organisation.py b/app/models/organisation.py
index cb9aa53ac..79e185d41 100644
--- a/app/models/organisation.py
+++ b/app/models/organisation.py
@@ -64,9 +64,6 @@ class Organisation(JSONModel, SortByNameMixin):
             return cls({})
         return cls(organisations_client.get_organisation(org_id))
 
-    def __lt__(self, other):
-        return self.name.lower() < other.name.lower()
-
     @classmethod
     def from_domain(cls, domain):
         return cls(organisations_client.get_organisation_by_domain(domain))