diff --git a/app/controllers/concerns/work_streamable.rb b/app/controllers/concerns/work_streamable.rb
index bc7fbbc8b..44dca9af9 100644
--- a/app/controllers/concerns/work_streamable.rb
+++ b/app/controllers/concerns/work_streamable.rb
@@ -39,10 +39,6 @@ def require_app_work_stream
   end
 
   def work_stream_filter
-    if FeatureFlags.work_stream.enabled?
-      [current_work_stream]
-    else
-      WorkStream.all
-    end
+    [current_work_stream]
   end
 end
diff --git a/app/models/concerns/user_competence.rb b/app/models/concerns/user_competence.rb
index 5f8784d55..db629a4ac 100644
--- a/app/models/concerns/user_competence.rb
+++ b/app/models/concerns/user_competence.rb
@@ -10,7 +10,6 @@ def work_streams
   def competencies
     return Types::CompetencyType.values if supervisor?
     return [] if data_analyst?
-    return Types::CompetencyType.values unless FeatureFlags.work_stream.enabled?
 
     @competencies ||= Allocating.user_competencies(id)
   end
diff --git a/app/views/casework/assigned_applications/_crime_application.html.erb b/app/views/casework/assigned_applications/_crime_application.html.erb
index fdbfe2631..e0a196b6b 100644
--- a/app/views/casework/assigned_applications/_crime_application.html.erb
+++ b/app/views/casework/assigned_applications/_crime_application.html.erb
@@ -7,11 +7,9 @@
   <td class="govuk-table__cell">
     <%= crime_application.reference %>
   </td>
-  <% if FeatureFlags.work_stream.enabled? %>
-    <td class="govuk-table__cell">
-      <%= label_text(crime_application.work_stream) %>
-    </td>
-  <% end %>
+  <td class="govuk-table__cell">
+    <%= label_text(crime_application.work_stream) %>
+  </td>
   <td class="govuk-table__cell">
     <%= l(crime_application.submitted_at) %>
   </td>
diff --git a/app/views/casework/assigned_applications/index.html.erb b/app/views/casework/assigned_applications/index.html.erb
index 9bb96b376..7e6c4d161 100644
--- a/app/views/casework/assigned_applications/index.html.erb
+++ b/app/views/casework/assigned_applications/index.html.erb
@@ -31,7 +31,7 @@
                 head.with_row do |row|
                   row.with_cell(colname: :applicant_name)
                   row.with_cell(colname: :reference)
-                  row.with_cell(colname: :work_stream) if FeatureFlags.work_stream.enabled?
+                  row.with_cell(colname: :work_stream)
                   row.with_cell(colname: :submitted_at)
                   row.with_cell(colname: :submitted_at, text: sanitize(thead_text(:time_passed)))
                 end
diff --git a/app/views/casework/crime_applications/index.html.erb b/app/views/casework/crime_applications/index.html.erb
index 1719c5aa7..d68aca169 100644
--- a/app/views/casework/crime_applications/index.html.erb
+++ b/app/views/casework/crime_applications/index.html.erb
@@ -4,23 +4,18 @@
   <%= t("casework.crime_applications.index.#{action_name}_heading") %>
 </h1>
 
-<% if FeatureFlags.work_stream.enabled? %>
-  <div class="govuk-tabs">
-    <ul class="govuk-tabs__list" role="tablist">
-      <% current_user.work_streams.each do |work_stream| %>
-        <% css_class = %w[govuk-tabs__list-item govuk-tabs__list-item--selected] %>
-        <%= content_tag(:li, class: work_stream == current_work_stream ? css_class : css_class.first) do %>
-          <%= link_to(work_stream.label, url_for(work_stream:), class: 'govuk-tabs__tab') %>
-        <% end %>
+<div class="govuk-tabs">
+  <ul class="govuk-tabs__list" role="tablist">
+    <% current_user.work_streams.each do |work_stream| %>
+      <% css_class = %w[govuk-tabs__list-item govuk-tabs__list-item--selected] %>
+      <%= content_tag(:li, class: work_stream == current_work_stream ? css_class : css_class.first) do %>
+        <%= link_to(work_stream.label, url_for(work_stream:), class: 'govuk-tabs__tab') %>
       <% end %>
-    </ul>
+    <% end %>
+  </ul>
 
-    <div class=govuk-tabs__panel>
-      <%= render partial: 'open_closed_applications',
-                 locals: { action_name: action_name, search: @search, report_type: @report_type } %>
-    </div>
+  <div class=govuk-tabs__panel>
+    <%= render partial: 'open_closed_applications',
+               locals: { action_name: action_name, search: @search, report_type: @report_type } %>
   </div>
-<% else %>
-  <%= render partial: 'open_closed_applications',
-             locals: { action_name: action_name, search: @search, report_type: @report_type } %>
-<% end  %>
+</div>
diff --git a/config/settings.yml b/config/settings.yml
index 25aea7bf2..866b1ce55 100644
--- a/config/settings.yml
+++ b/config/settings.yml
@@ -7,10 +7,6 @@ feature_flags:
     local: false
     staging: true
     production: false # user managers should not access the service in production
-  work_stream:
-    local: true
-    staging: true
-    production: true
   means_journey:
     local: true
     staging: true
diff --git a/spec/models/concerns/user_competence_spec.rb b/spec/models/concerns/user_competence_spec.rb
index b04487b54..c1684ef2c 100644
--- a/spec/models/concerns/user_competence_spec.rb
+++ b/spec/models/concerns/user_competence_spec.rb
@@ -56,18 +56,6 @@
           expect(competencies).to be_empty
         end
       end
-
-      context 'when work stream feature flag is disabled' do
-        before do
-          allow(FeatureFlags).to receive(:work_stream) {
-                                   instance_double(FeatureFlags::EnabledFeature, enabled?: false)
-                                 }
-        end
-
-        it 'returns all work_streams regardless of competencies' do
-          expect(competencies).to eq %w[criminal_applications_team criminal_applications_team_2 extradition]
-        end
-      end
     end
   end
 end
diff --git a/spec/requests/authorisation_spec.rb b/spec/requests/authorisation_spec.rb
index 940b2fc3e..7d32c368d 100644
--- a/spec/requests/authorisation_spec.rb
+++ b/spec/requests/authorisation_spec.rb
@@ -104,12 +104,6 @@
 
   include Devise::Test::IntegrationHelpers
 
-  before do
-    allow(FeatureFlags).to receive(:work_stream) {
-      instance_double(FeatureFlags::EnabledFeature, enabled?: false)
-    }
-  end
-
   def expected_status(route_name)
     case route_name
     when 'users_auth_failure', 'forbidden'
diff --git a/spec/system/casework/assigning/viewing_your_assigned_applications_spec.rb b/spec/system/casework/assigning/viewing_your_assigned_applications_spec.rb
index 4bf13b800..501de764b 100644
--- a/spec/system/casework/assigning/viewing_your_assigned_applications_spec.rb
+++ b/spec/system/casework/assigning/viewing_your_assigned_applications_spec.rb
@@ -93,20 +93,6 @@
       expect(page).to have_content 'Open applications'
       expect(page).to have_current_path '/applications/open'
     end
-
-    context 'when work stream feature flag in is not enabled' do
-      before do
-        allow(FeatureFlags).to receive(:work_stream) {
-          instance_double(FeatureFlags::EnabledFeature, enabled?: false)
-        }
-        visit '/'
-      end
-
-      it 'takes you to open applications path when you click "open applications"' do
-        click_on('Open applications')
-        expect(page).to have_current_path '/applications/open'
-      end
-    end
   end
 
   context 'when an assigned application is not found on the datastore' do
diff --git a/spec/system/casework/closed_applications_dashboard_spec.rb b/spec/system/casework/closed_applications_dashboard_spec.rb
index d40855e81..3596b2c9b 100644
--- a/spec/system/casework/closed_applications_dashboard_spec.rb
+++ b/spec/system/casework/closed_applications_dashboard_spec.rb
@@ -21,18 +21,12 @@
     ]
   end
 
-  let(:work_stream_flag_enabled) { true }
-
   let(:user_id) { current_user_id }
 
   before do
     visit '/'
     click_on 'open applications'
 
-    allow(FeatureFlags).to receive(:work_stream) {
-      instance_double(FeatureFlags::EnabledFeature, enabled?: work_stream_flag_enabled)
-    }
-
     return_details = ReturnDetails.new(
       reason: ReturnDetails::RETURN_REASONS.first,
       details: 'Detailed reason'
@@ -47,18 +41,6 @@
     click_on 'Closed applications'
   end
 
-  context 'when work stream feature flag disabled' do
-    let(:work_stream_flag_enabled) { false }
-
-    it 'shows only closed applications' do
-      expect_datastore_to_have_been_searched_with(
-        { review_status: Types::REVIEW_STATUS_GROUPS['closed'],
-            work_stream: %w[criminal_applications_team criminal_applications_team_2 extradition] },
-        sorting: ApplicationSearchSorting.new(sort_by: 'reviewed_at', sort_direction: 'descending')
-      )
-    end
-  end
-
   it 'includes the page title' do
     expect(page).to have_content I18n.t('casework.crime_applications.index.closed_title')
   end
@@ -104,40 +86,36 @@
   end
 
   context 'when work stream feature flag is enabled' do
-    let(:work_stream_flag_enabled) { true }
-
     it 'includes tabs for work streams' do
       tabs = find(:xpath, "//div[@class='govuk-tabs']")
 
       expect(tabs).to have_content 'CAT 1 CAT 2 Extradition'
     end
 
-    context 'when viewing closed applications by work stream' do
-      it 'searches for extradition closed applications' do
-        click_on 'Extradition'
-        expect_datastore_to_have_been_searched_with(
-          { review_status: Types::REVIEW_STATUS_GROUPS['closed'], work_stream: %w[extradition] },
-          sorting: ApplicationSearchSorting.new(sort_by: 'reviewed_at', sort_direction: 'descending')
-        )
-      end
-
-      it 'searches for CAT 2 closed applications' do
-        click_on 'CAT 2'
-        expect_datastore_to_have_been_searched_with(
-          { review_status: Types::REVIEW_STATUS_GROUPS['closed'], work_stream: %w[criminal_applications_team_2] },
-          sorting: ApplicationSearchSorting.new(sort_by: 'reviewed_at', sort_direction: 'descending')
-        )
-      end
-
-      it 'searches for CAT 1 closed applications' do
-        click_on 'CAT 1'
-        expect_datastore_to_have_been_searched_with(
-          { review_status: Types::REVIEW_STATUS_GROUPS['closed'],
-            work_stream: %w[criminal_applications_team] },
-          sorting: ApplicationSearchSorting.new(sort_by: 'reviewed_at', sort_direction: 'descending'),
-          number_of_times: 2
-        )
-      end
+    it 'searches for extradition closed applications' do
+      click_on 'Extradition'
+      expect_datastore_to_have_been_searched_with(
+        { review_status: Types::REVIEW_STATUS_GROUPS['closed'], work_stream: %w[extradition] },
+        sorting: ApplicationSearchSorting.new(sort_by: 'reviewed_at', sort_direction: 'descending')
+      )
+    end
+
+    it 'searches for CAT 2 closed applications' do
+      click_on 'CAT 2'
+      expect_datastore_to_have_been_searched_with(
+        { review_status: Types::REVIEW_STATUS_GROUPS['closed'], work_stream: %w[criminal_applications_team_2] },
+        sorting: ApplicationSearchSorting.new(sort_by: 'reviewed_at', sort_direction: 'descending')
+      )
+    end
+
+    it 'searches for CAT 1 closed applications' do
+      click_on 'CAT 1'
+      expect_datastore_to_have_been_searched_with(
+        { review_status: Types::REVIEW_STATUS_GROUPS['closed'],
+          work_stream: %w[criminal_applications_team] },
+        sorting: ApplicationSearchSorting.new(sort_by: 'reviewed_at', sort_direction: 'descending'),
+        number_of_times: 2
+      )
     end
   end
 end
diff --git a/spec/system/casework/no_competencies_spec.rb b/spec/system/casework/no_competencies_spec.rb
index 3a66ae001..cd9f56df5 100644
--- a/spec/system/casework/no_competencies_spec.rb
+++ b/spec/system/casework/no_competencies_spec.rb
@@ -16,10 +16,6 @@
 
   before do
     visit '/'
-
-    allow(FeatureFlags).to receive(:work_stream) {
-      instance_double(FeatureFlags::EnabledFeature, enabled?: true)
-    }
   end
 
   context 'when navigating to application pages' do
diff --git a/spec/system/casework/open_applications_dashboard_spec.rb b/spec/system/casework/open_applications_dashboard_spec.rb
index 26db52a07..2c80c0e89 100644
--- a/spec/system/casework/open_applications_dashboard_spec.rb
+++ b/spec/system/casework/open_applications_dashboard_spec.rb
@@ -2,34 +2,16 @@
 
 RSpec.describe 'Open Applications' do
   include_context 'with stubbed search'
-  let(:work_stream_flag_enabled) { true }
   let(:report_turbo_link_work_stream_params) do
     report_link = URI(page.find('turbo-frame#current_workload_report', visible: false)['src'])
     CGI.parse(report_link.query)['work_streams[]']
   end
 
   before do
-    allow(FeatureFlags).to receive(:work_stream) {
-      instance_double(FeatureFlags::EnabledFeature, enabled?: work_stream_flag_enabled)
-    }
-
     visit '/'
     click_on 'Open applications'
   end
 
-  context 'when work stream feature flag disabled' do
-    let(:work_stream_flag_enabled) { false }
-
-    it 'shows open applications from all streams' do
-      expect_datastore_to_have_been_searched_with(
-        { review_status: Types::REVIEW_STATUS_GROUPS['open'],
-          work_stream: %w[criminal_applications_team criminal_applications_team_2 extradition] },
-        sorting: ApplicationSearchSorting.new(sort_by: 'submitted_at', sort_direction: 'ascending')
-      )
-      expect(report_turbo_link_work_stream_params).to eq %w[cat_1 cat_2 extradition]
-    end
-  end
-
   it 'includes the page title' do
     expect(page).to have_content I18n.t('casework.crime_applications.index.open_title')
   end
diff --git a/spec/system/casework/primary_nav_spec.rb b/spec/system/casework/primary_nav_spec.rb
index 9c3e369a3..4d5d86788 100644
--- a/spec/system/casework/primary_nav_spec.rb
+++ b/spec/system/casework/primary_nav_spec.rb
@@ -60,23 +60,4 @@
     expect(heading_text).to eq('Closed applications')
     expect(page).to have_current_path '/applications/closed'
   end
-
-  context 'when work stream feature flag in is not enabled' do
-    before do
-      allow(FeatureFlags).to receive(:work_stream) {
-        instance_double(FeatureFlags::EnabledFeature, enabled?: false)
-      }
-      visit '/'
-    end
-
-    it 'takes you to the open applications path when you click "Open applications"' do
-      click_on('Open applications')
-      expect(page).to have_current_path '/applications/open'
-    end
-
-    it 'takes you to the closed applications path when you click "Closed applications"' do
-      click_on('Closed applications')
-      expect(page).to have_current_path '/applications/closed'
-    end
-  end
 end