diff --git a/app/models/form/lettings/questions/location_id.rb b/app/models/form/lettings/questions/location_id.rb
index 80e34aac0..2964298ed 100644
--- a/app/models/form/lettings/questions/location_id.rb
+++ b/app/models/form/lettings/questions/location_id.rb
@@ -30,11 +30,8 @@ class Form::Lettings::Questions::LocationId < ::Form::Question
 
     scheme_location_ids = lettings_log.scheme.locations.visible.confirmed.pluck(:id)
     answer_options.select { |k, _v| scheme_location_ids.include?(k.to_i) }
-                  .sort_by { |_, v|
-                    name = v["hint"].match(/[a-zA-Z].*/).to_s
-                    number = v["hint"].match(/\d+/).to_s.to_i
-                    [name, number]
-                  }.to_h
+                  .sort_by { |_, v| v["value"] }
+                  .to_h
   end
 
   def hidden_in_check_answers?(lettings_log, _current_user = nil)
diff --git a/spec/models/form/lettings/questions/location_id_spec.rb b/spec/models/form/lettings/questions/location_id_spec.rb
index 2ea72c705..755c1f1a6 100644
--- a/spec/models/form/lettings/questions/location_id_spec.rb
+++ b/spec/models/form/lettings/questions/location_id_spec.rb
@@ -142,27 +142,27 @@ RSpec.describe Form::Lettings::Questions::LocationId, type: :model do
 
       context "and some locations start with numbers" do
         before do
-          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 5), name: "2 Abe Road")
-          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 6), name: "1 Abe Road")
-          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 7), name: "1 Lake Lane")
-          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 8), name: "3 Abe Road")
-          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 9), name: "2 Lake Lane")
-          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 10), name: "Smith Avenue")
-          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 11), name: "Abacus Road")
-          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 12), name: "Hawthorne Road")
+          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 5), name: "2 Abe Road", postcode: "AA1 1AA")
+          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 6), name: "1 Abe Road", postcode: "AA1 2AA")
+          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 7), name: "1 Lake Lane", postcode: "AA1 3AA")
+          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 8), name: "3 Abe Road", postcode: "AA1 4AA")
+          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 9), name: "2 Lake Lane", postcode: "AA1 5AA")
+          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 10), name: "Smith Avenue", postcode: "AA1 6AA")
+          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 11), name: "Abacus Road", postcode: "AA1 7AA")
+          FactoryBot.create(:location, scheme:, startdate: Time.utc(2022, 5, 12), name: "Hawthorne Road", postcode: "AA1 8AA")
           lettings_log.update!(scheme:)
         end
 
-        it "orders the locations by name then numerically" do
+        it "orders the locations by postcode" do
           expect(question.displayed_answer_options(lettings_log).values.map { |v| v["hint"] }).to eq([
-            "Abacus Road",
-            "1 Abe Road",
             "2 Abe Road",
-            "3 Abe Road",
-            "Hawthorne Road",
+            "1 Abe Road",
             "1 Lake Lane",
+            "3 Abe Road",
             "2 Lake Lane",
             "Smith Avenue",
+            "Abacus Road",
+            "Hawthorne Road",
           ])
         end
       end