diff --git a/adr/00003-testing-practices.md b/adr/00003-testing-practices.md
index 35820fb81c..9784f8cae4 100644
--- a/adr/00003-testing-practices.md
+++ b/adr/00003-testing-practices.md
@@ -19,13 +19,13 @@ Use the following test types for our classes, modules, and functionalities.
   ```ruby
   RSpec.describe User, type: :model do
     subject { build(:user) }
-
+  
     describe ".class_method" do
       it "does something" do
         expect(User.class_method).to do_something
       end
     end
-
+  
     describe "#instance_method" do
       it "does something" do
         expect(subject.instance_method).to do_something
@@ -41,7 +41,7 @@ Use the following test types for our classes, modules, and functionalities.
         expect(User.class_method).to do_something
       end
     end
-
+  
     describe "#instance_method" do
       it "does something" do
         expect(subject.instance_method).to do_something
@@ -59,11 +59,11 @@ Use the following test types for our classes, modules, and functionalities.
       given_i_am_on_the_landing_page
       i_can_see_something
     end
-
+  
     def given_i_am_on_the_landing_page
       visit "/"
     end
-
+  
     def i_can_see_something
       expect(page).to have_content("Something")
     end
@@ -81,25 +81,19 @@ Use the following test types for our classes, modules, and functionalities.
       # Base happy path first
       it "returns a list of users" do
         get :index
-
-        expected_json = [
-          {
-            id: 1,
-            first_name: "John",
-            last_name: "Doe"
-          }
-        ]
-
+  
+        expected_json = [{ id: 1, first_name: "John", last_name: "Doe" }]
+  
         expect(response.body).to eq(expected_json)
       end
-
+  
       # Happy path variants next
       context "when given a 'name' query parameter" do
         it "returns a list of users filtered by name" do
           # Assertion
         end
       end
-
+  
       # Error paths
       context "without authentication" do
         it "returns a 401 error" do
@@ -107,7 +101,7 @@ Use the following test types for our classes, modules, and functionalities.
         end
       end
     end
-
+  
     context "POST /users" do
       it "returns a list of users" do
         get :index
diff --git a/app/models/dfe_sign_in_user.rb b/app/models/dfe_sign_in_user.rb
index 4ae7efd6b1..f46cef7c89 100644
--- a/app/models/dfe_sign_in_user.rb
+++ b/app/models/dfe_sign_in_user.rb
@@ -21,7 +21,7 @@ def self.begin_session!(session, omniauth_payload)
       "email" => omniauth_payload["info"]["email"],
       # "dfe_sign_in_uid" => omniauth_payload["uid"],
       "first_name" => omniauth_payload["info"]["first_name"],
-      "last_name" => omniauth_payload["info"]["last_name"]
+      "last_name" => omniauth_payload["info"]["last_name"],
       # "last_active_at" => Time.zone.now,
       # "id_token" => omniauth_payload["credentials"]["id_token"],
       # "provider" => omniauth_payload["provider"],
@@ -39,7 +39,7 @@ def self.load_from_session(session)
       last_name: dfe_sign_in_session["last_name"],
       # id_token: dfe_sign_in_session["id_token"],
       # provider: dfe_sign_in_session["provider"],
-      service: session["service"]
+      service: session["service"],
     )
   end
 
diff --git a/app/services/gias_csv_importer.rb b/app/services/gias_csv_importer.rb
index 439057049e..ac2a4fb226 100644
--- a/app/services/gias_csv_importer.rb
+++ b/app/services/gias_csv_importer.rb
@@ -32,7 +32,7 @@ def call
           address2: school["Locality"].presence,
           address3: school["Address3"].presence,
           website: school["SchoolWebsite"].presence,
-          telephone: school["TelephoneNum"].presence
+          telephone: school["TelephoneNum"].presence,
         }
       end
 
diff --git a/bin/bundle b/bin/bundle
index e7b4ab397f..f762277c87 100755
--- a/bin/bundle
+++ b/bin/bundle
@@ -102,7 +102,7 @@ m =
       require_error = activation_error_handling { require "bundler/version" }
       if require_error.nil? &&
            Gem::Requirement.new(bundler_requirement).satisfied_by?(
-             Gem::Version.new(Bundler::VERSION)
+             Gem::Version.new(Bundler::VERSION),
            )
         return
       end
diff --git a/config/application.rb b/config/application.rb
index 2aeb8a349f..700c90e186 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -33,7 +33,7 @@ class Application < Rails::Application
     config.autoload_lib(ignore: %w[])
 
     config.assets.paths << Rails.root.join(
-      "node_modules/govuk-frontend/dist/govuk/assets"
+      "node_modules/govuk-frontend/dist/govuk/assets",
     )
 
     config.autoload_paths += %W[#{config.root}/app/assets/components]
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 735c2d6306..fb54819e24 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -25,7 +25,7 @@
 
     config.cache_store = :memory_store
     config.public_file_server.headers = {
-      "Cache-Control" => "public, max-age=#{2.days.to_i}"
+      "Cache-Control" => "public, max-age=#{2.days.to_i}",
     }
   else
     config.action_controller.perform_caching = false
@@ -35,7 +35,7 @@
 
   config.action_mailer.delivery_method = :notify
   config.action_mailer.notify_settings = {
-    api_key: ENV.fetch("GOVUK_NOTIFY_API_KEY")
+    api_key: ENV.fetch("GOVUK_NOTIFY_API_KEY"),
   }
 
   # Store uploaded files on the local file system (see config/storage.yml for options).
diff --git a/config/environments/test.rb b/config/environments/test.rb
index b8cfb2842b..aad4bd68ab 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -19,7 +19,7 @@
   # Configure public file server for tests with Cache-Control for performance.
   config.public_file_server.enabled = true
   config.public_file_server.headers = {
-    "Cache-Control" => "public, max-age=#{1.hour.to_i}"
+    "Cache-Control" => "public, max-age=#{1.hour.to_i}",
   }
 
   # Show full error reports and disable caching.
diff --git a/config/initializers/better_html.rb b/config/initializers/better_html.rb
index 957f6f86a5..37d889823b 100644
--- a/config/initializers/better_html.rb
+++ b/config/initializers/better_html.rb
@@ -3,7 +3,7 @@
 
 BetterHtml.config =
   BetterHtml::Config.new(
-    YAML.safe_load(File.read(Rails.root.join(".better-html.yml")))
+    YAML.safe_load(File.read(Rails.root.join(".better-html.yml"))),
   )
 
 BetterHtml.configure do |config|
diff --git a/config/initializers/omniauth.rb b/config/initializers/omniauth.rb
index 433415332b..1899588c75 100644
--- a/config/initializers/omniauth.rb
+++ b/config/initializers/omniauth.rb
@@ -9,7 +9,7 @@
       provider(
         :developer,
         fields: %i[uid email first_name last_name],
-        uid_field: :uid
+        uid_field: :uid,
       )
     end
 when "dfe-sign-in"
diff --git a/config/initializers/persona.rb b/config/initializers/persona.rb
index c60e4af2e0..d4833c9aa8 100644
--- a/config/initializers/persona.rb
+++ b/config/initializers/persona.rb
@@ -6,15 +6,15 @@
   {
     first_name: "Patricia",
     last_name: "Adebayo",
-    email: "patricia@example.com"
+    email: "patricia@example.com",
   },
   { first_name: "Mary", last_name: "Lawson", email: "mary@example.com" },
   {
     first_name: "Colin",
     last_name: "Chapman",
     email: "colin@example.com",
-    support_user: true
-  }
+    support_user: true,
+  },
 ].push((DEVELOPER_PERSONA if defined?(DEVELOPER_PERSONA))).compact.freeze
 
 PERSONA_EMAILS = PERSONAS.map { |persona| persona[:email] }
diff --git a/config/routes/placements.rb b/config/routes/placements.rb
index 55c69dddc1..25f30b8416 100644
--- a/config/routes/placements.rb
+++ b/config/routes/placements.rb
@@ -1,7 +1,7 @@
 scope module: :placements,
       as: :placements,
       constraints: {
-        host: ENV["PLACEMENTS_HOST"]
+        host: ENV["PLACEMENTS_HOST"],
       } do
   root to: "pages#index"
 
diff --git a/lib/hosting_environment.rb b/lib/hosting_environment.rb
index bcd5d541c8..05b845b63e 100644
--- a/lib/hosting_environment.rb
+++ b/lib/hosting_environment.rb
@@ -1,7 +1,7 @@
 module HostingEnvironment
   PRODUCTION_BANNER_NAME = {
     claims: "beta",
-    placements: "beta"
+    placements: "beta",
   }.with_indifferent_access.freeze
 
   def self.name(current_service)
diff --git a/lib/tasks/auto_annotate_models.rake b/lib/tasks/auto_annotate_models.rake
index 6d2fa9fea7..43a5ccb407 100644
--- a/lib/tasks/auto_annotate_models.rake
+++ b/lib/tasks/auto_annotate_models.rake
@@ -52,7 +52,7 @@ if Rails.env.development?
       "trace" => "false",
       "wrapper_open" => nil,
       "wrapper_close" => nil,
-      "with_comment" => "true"
+      "with_comment" => "true",
     )
   end
 
diff --git a/spec/decorators/persona_decorator_spec.rb b/spec/decorators/persona_decorator_spec.rb
index 7f8b645646..3e69318723 100644
--- a/spec/decorators/persona_decorator_spec.rb
+++ b/spec/decorators/persona_decorator_spec.rb
@@ -11,7 +11,7 @@
     context "when the persona is Patricia" do
       it "returns orange" do
         expect(build(:persona, :patricia).decorate.type_tag_colour).to eq(
-          "orange"
+          "orange",
         )
       end
     end
diff --git a/spec/features/personas/sign_in_as_a_claims_user_persona_spec.rb b/spec/features/personas/sign_in_as_a_claims_user_persona_spec.rb
index 926cbf3cc5..b8626302bf 100644
--- a/spec/features/personas/sign_in_as_a_claims_user_persona_spec.rb
+++ b/spec/features/personas/sign_in_as_a_claims_user_persona_spec.rb
@@ -70,7 +70,7 @@ def then_i_see_persona_details_for_anne
   page_has_persona_content(
     first_name: "Anne",
     last_name: "Wilson",
-    email: "anne_wilson@example.org"
+    email: "anne_wilson@example.org",
   )
 end
 
@@ -78,7 +78,7 @@ def then_i_see_persona_details_for_patricia
   page_has_persona_content(
     first_name: "Patricia",
     last_name: "Adebayo",
-    email: "patricia@example.com"
+    email: "patricia@example.com",
   )
 end
 
@@ -86,7 +86,7 @@ def then_i_see_persona_details_for_mary
   page_has_persona_content(
     first_name: "Mary",
     last_name: "Lawson",
-    email: "mary@example.com"
+    email: "mary@example.com",
   )
 end
 
@@ -94,7 +94,7 @@ def then_i_see_persona_details_for_colin
   page_has_persona_content(
     first_name: "Colin",
     last_name: "Chapman",
-    email: "colin@example.com"
+    email: "colin@example.com",
   )
 end
 
diff --git a/spec/features/personas/sign_in_as_a_placements_user_persona_spec.rb b/spec/features/personas/sign_in_as_a_placements_user_persona_spec.rb
index 0606f6cc91..069e7a5a00 100644
--- a/spec/features/personas/sign_in_as_a_placements_user_persona_spec.rb
+++ b/spec/features/personas/sign_in_as_a_placements_user_persona_spec.rb
@@ -85,7 +85,7 @@ def then_i_see_persona_details_for_anne
   page_has_persona_content(
     first_name: "Anne",
     last_name: "Wilson",
-    email: "anne_wilson@example.org"
+    email: "anne_wilson@example.org",
   )
 end
 
@@ -93,7 +93,7 @@ def then_i_see_persona_details_for_patricia
   page_has_persona_content(
     first_name: "Patricia",
     last_name: "Adebayo",
-    email: "patricia@example.com"
+    email: "patricia@example.com",
   )
 end
 
@@ -101,7 +101,7 @@ def then_i_see_persona_details_for_mary
   page_has_persona_content(
     first_name: "Mary",
     last_name: "Lawson",
-    email: "mary@example.com"
+    email: "mary@example.com",
   )
 end
 
@@ -109,7 +109,7 @@ def then_i_see_persona_details_for_colin
   page_has_persona_content(
     first_name: "Colin",
     last_name: "Chapman",
-    email: "colin@example.com"
+    email: "colin@example.com",
   )
 end
 
diff --git a/spec/lib/hosting_environment_spec.rb b/spec/lib/hosting_environment_spec.rb
index bd8c8490a9..4f1f767e0b 100644
--- a/spec/lib/hosting_environment_spec.rb
+++ b/spec/lib/hosting_environment_spec.rb
@@ -26,14 +26,14 @@
     it "returns the banner description of the hosting environment for claims" do
       current_service = "claims"
       expect(described_class.banner_description(current_service)).to eq(
-        "Make a complaint or give feedback"
+        "Make a complaint or give feedback",
       )
     end
 
     it "returns the banner description of the hosting environment for placements" do
       current_service = "placements"
       expect(described_class.banner_description(current_service)).to eq(
-        "Make a complaint or give feedback"
+        "Make a complaint or give feedback",
       )
     end
   end
diff --git a/spec/models/dfe_sign_in_user_spec.rb b/spec/models/dfe_sign_in_user_spec.rb
index 536e62db2f..1f56e2cecc 100644
--- a/spec/models/dfe_sign_in_user_spec.rb
+++ b/spec/models/dfe_sign_in_user_spec.rb
@@ -8,8 +8,8 @@
         "info" => {
           "first_name" => "Example",
           "last_name" => "User",
-          "email" => "example_user@example.com"
-        }
+          "email" => "example_user@example.com",
+        },
       }
       DfESignInUser.begin_session!(session, omniauth_payload)
 
@@ -18,9 +18,9 @@
           "dfe_sign_in_user" => {
             "first_name" => "Example",
             "last_name" => "User",
-            "email" => "example_user@example.com"
-          }
-        }
+            "email" => "example_user@example.com",
+          },
+        },
       )
     end
   end
@@ -31,9 +31,9 @@
         "dfe_sign_in_user" => {
           "first_name" => "Example",
           "last_name" => "User",
-          "email" => "example_user@example.com"
+          "email" => "example_user@example.com",
         },
-        "service" => :placements
+        "service" => :placements,
       }
       dfe_sign_in_user = DfESignInUser.load_from_session(session)
 
@@ -53,9 +53,9 @@
           "dfe_sign_in_user" => {
             "first_name" => claims_user.first_name,
             "last_name" => claims_user.last_name,
-            "email" => claims_user.email
+            "email" => claims_user.email,
           },
-          "service" => :claims
+          "service" => :claims,
         }
 
         dfe_sign_in_user = DfESignInUser.load_from_session(session)
@@ -73,9 +73,9 @@
           "dfe_sign_in_user" => {
             "first_name" => placements_user.first_name,
             "last_name" => placements_user.last_name,
-            "email" => placements_user.email
+            "email" => placements_user.email,
           },
-          "service" => :placements
+          "service" => :placements,
         }
 
         dfe_sign_in_user = DfESignInUser.load_from_session(session)
@@ -91,9 +91,9 @@
           "dfe_sign_in_user" => {
             "first_name" => support_user.first_name,
             "last_name" => support_user.last_name,
-            "email" => support_user.email
+            "email" => support_user.email,
           },
-          "service" => :placements
+          "service" => :placements,
         }
 
         dfe_sign_in_user = DfESignInUser.load_from_session(session)
@@ -110,8 +110,8 @@
         "dfe_sign_in_user" => {
           "first_name" => "Example",
           "last_name" => "User",
-          "email" => "example_user@example.com"
-        }
+          "email" => "example_user@example.com",
+        },
       }
 
       DfESignInUser.end_session!(session)
diff --git a/spec/models/service_update_spec.rb b/spec/models/service_update_spec.rb
index d90c94c54a..929c580a6d 100644
--- a/spec/models/service_update_spec.rb
+++ b/spec/models/service_update_spec.rb
@@ -11,9 +11,9 @@
             {
               date: "2023-12-14",
               title: "Claim Update",
-              content: "Some content"
-            }
-          ]
+              content: "Some content",
+            },
+          ],
         )
         updates = ServiceUpdate.where(service: :claims)
         expect(updates.length).to eq(1)
@@ -34,9 +34,9 @@
             {
               date: "2023-12-14",
               title: "Placement Update",
-              content: "Some content"
-            }
-          ]
+              content: "Some content",
+            },
+          ],
         )
         updates = ServiceUpdate.where(service: :placements)
         expect(updates.length).to eq(1)
@@ -60,7 +60,7 @@
     it "returns placements YAML file path" do
       file_path = ServiceUpdate.file_path(service: :placements)
       expect(file_path).to eq(
-        Rails.root.join("db/placements_service_updates.yml")
+        Rails.root.join("db/placements_service_updates.yml"),
       )
     end
 
diff --git a/spec/requests/sessions_spec.rb b/spec/requests/sessions_spec.rb
index 4d85561a6d..782c21c418 100644
--- a/spec/requests/sessions_spec.rb
+++ b/spec/requests/sessions_spec.rb
@@ -14,7 +14,7 @@
            params: {
              first_name: placements_user.first_name,
              last_name: placements_user.last_name,
-             email: placements_user.email
+             email: placements_user.email,
            }
       follow_redirect!
 
diff --git a/spec/services/gias_csv_importer_spec.rb b/spec/services/gias_csv_importer_spec.rb
index 73d3e579e3..59894b0f18 100644
--- a/spec/services/gias_csv_importer_spec.rb
+++ b/spec/services/gias_csv_importer_spec.rb
@@ -15,8 +15,8 @@
   it "logs messages to STDOUT" do
     expect { subject }.to output(
       match(/Done!/).and(match(/Invalid rows - /)).and(
-        match(/Row 5 is invalid/)
-      )
+        match(/Row 5 is invalid/),
+      ),
     ).to_stdout
   end
 end
diff --git a/spec/support/capybara.rb b/spec/support/capybara.rb
index 23fc8f8349..185270855b 100644
--- a/spec/support/capybara.rb
+++ b/spec/support/capybara.rb
@@ -1,18 +1,18 @@
-require 'capybara/rspec'
+require "capybara/rspec"
 
 # Use different Capybara ports when running tests in parallel
-if ENV['TEST_ENV_NUMBER']
-  Capybara.server_port = 9887 + ENV['TEST_ENV_NUMBER'].to_i
+if ENV["TEST_ENV_NUMBER"]
+  Capybara.server_port = 9887 + ENV["TEST_ENV_NUMBER"].to_i
 end
 
 Capybara.register_driver :chrome_headless do |app|
   options = Selenium::WebDriver::Chrome::Options.new
 
-  options.add_argument('--headless') unless ENV['HEADLESS'] == 'false'
-  options.add_argument('--no-sandbox')
-  options.add_argument('--disable-dev-shm-usage')
-  options.add_argument('--disable-gpu')
-  options.add_argument('--window-size=1400,1400')
+  options.add_argument("--headless") unless ENV["HEADLESS"] == "false"
+  options.add_argument("--no-sandbox")
+  options.add_argument("--disable-dev-shm-usage")
+  options.add_argument("--disable-gpu")
+  options.add_argument("--window-size=1400,1400")
 
   Capybara::Selenium::Driver.new(app, browser: :chrome, options:)
 end
diff --git a/spec/tasks/gias_update_spec.rb b/spec/tasks/gias_update_spec.rb
index 84df49cbfa..c687653787 100644
--- a/spec/tasks/gias_update_spec.rb
+++ b/spec/tasks/gias_update_spec.rb
@@ -11,7 +11,7 @@
     tempfile = Tempfile.new("foo")
 
     expect(Down).to receive(:download).with(
-      "#{ENV["GIAS_CSV_BASE_URL"]}/#{gias_filename}"
+      "#{ENV["GIAS_CSV_BASE_URL"]}/#{gias_filename}",
     ).and_return(tempfile)
 
     expect(GiasCsvImporter).to receive(:call).with(tempfile.path)
diff --git a/spec/views/erb_safety_check_spec.rb b/spec/views/erb_safety_check_spec.rb
index caf14de7a3..7300a7f0f4 100644
--- a/spec/views/erb_safety_check_spec.rb
+++ b/spec/views/erb_safety_check_spec.rb
@@ -7,7 +7,7 @@
 
   erb_glob =
     Rails.root.join(
-      "app/views/**/{*.htm,*.html,*.htm.erb,*.html.erb,*.html+*.erb}"
+      "app/views/**/{*.htm,*.html,*.htm.erb,*.html.erb,*.html+*.erb}",
     )
 
   Dir[erb_glob].each do |filename|