diff --git a/app/controllers/bulk_upload_lettings_logs_controller.rb b/app/controllers/bulk_upload_lettings_logs_controller.rb
index c7d78df5c..b9bd9895d 100644
--- a/app/controllers/bulk_upload_lettings_logs_controller.rb
+++ b/app/controllers/bulk_upload_lettings_logs_controller.rb
@@ -3,12 +3,10 @@ class BulkUploadLettingsLogsController < ApplicationController
   before_action :validate_data_protection_agrement_signed!
 
   def start
-    if current_user.support? && params[:organisation_id].present?
-      redirect_to bulk_upload_lettings_log_path(id: "upload-your-file", form: { year: current_year }, organisation_id: params[:organisation_id])
-    elsif have_choice_of_year?
-      redirect_to bulk_upload_lettings_log_path(id: "year")
+    if have_choice_of_year?
+      redirect_to bulk_upload_lettings_log_path(id: "year", form: { organisation_id: })
     else
-      redirect_to bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year: current_year })
+      redirect_to bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year: current_year, organisation_id: })
     end
   end
 
@@ -53,7 +51,7 @@ private
               when "needstype"
                 Forms::BulkUploadLettings::Needstype.new(form_params)
               when "upload-your-file"
-                Forms::BulkUploadLettings::UploadYourFile.new(form_params.merge(current_user:, request:))
+                Forms::BulkUploadLettings::UploadYourFile.new(form_params.merge(current_user:))
               when "checking-file"
                 Forms::BulkUploadLettings::CheckingFile.new(form_params)
               else
diff --git a/app/controllers/bulk_upload_sales_logs_controller.rb b/app/controllers/bulk_upload_sales_logs_controller.rb
index 923fa2bd6..dcb1772e9 100644
--- a/app/controllers/bulk_upload_sales_logs_controller.rb
+++ b/app/controllers/bulk_upload_sales_logs_controller.rb
@@ -3,12 +3,10 @@ class BulkUploadSalesLogsController < ApplicationController
   before_action :validate_data_protection_agrement_signed!
 
   def start
-    if current_user.support? && params[:organisation_id].present?
-      redirect_to bulk_upload_sales_log_path(id: "upload-your-file", form: { year: current_year }, organisation_id: params[:organisation_id])
-    elsif have_choice_of_year?
-      redirect_to bulk_upload_sales_log_path(id: "year")
+    if have_choice_of_year?
+      redirect_to bulk_upload_sales_log_path(id: "year", form: { organisation_id: })
     else
-      redirect_to bulk_upload_sales_log_path(id: "prepare-your-file", form: { year: current_year })
+      redirect_to bulk_upload_sales_log_path(id: "prepare-your-file", form: { year: current_year, organisation_id: })
     end
   end
 
@@ -51,7 +49,7 @@ private
               when "guidance"
                 Forms::BulkUploadSales::Guidance.new(form_params.merge(referrer: params[:referrer]))
               when "upload-your-file"
-                Forms::BulkUploadSales::UploadYourFile.new(form_params.merge(current_user:, request:))
+                Forms::BulkUploadSales::UploadYourFile.new(form_params.merge(current_user:))
               when "checking-file"
                 Forms::BulkUploadSales::CheckingFile.new(form_params)
               else
diff --git a/app/models/forms/bulk_upload_lettings/checking_file.rb b/app/models/forms/bulk_upload_lettings/checking_file.rb
index 8cd9ee696..7f3741efd 100644
--- a/app/models/forms/bulk_upload_lettings/checking_file.rb
+++ b/app/models/forms/bulk_upload_lettings/checking_file.rb
@@ -6,6 +6,7 @@ module Forms
       include Rails.application.routes.url_helpers
 
       attribute :year, :integer
+      attribute :organisation_id, :integer
 
       def view_path
         "bulk_upload_lettings_logs/forms/checking_file"
diff --git a/app/models/forms/bulk_upload_lettings/guidance.rb b/app/models/forms/bulk_upload_lettings/guidance.rb
index b6cf5bf74..dde51f261 100644
--- a/app/models/forms/bulk_upload_lettings/guidance.rb
+++ b/app/models/forms/bulk_upload_lettings/guidance.rb
@@ -7,6 +7,7 @@ module Forms
 
       attribute :year, :integer
       attribute :referrer
+      attribute :organisation_id, :integer
 
       def view_path
         "bulk_upload_shared/guidance"
@@ -15,7 +16,7 @@ module Forms
       def back_path
         case referrer
         when "prepare-your-file"
-          bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year: })
+          bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year:, organisation_id: })
         when "home"
           root_path
         else
diff --git a/app/models/forms/bulk_upload_lettings/needstype.rb b/app/models/forms/bulk_upload_lettings/needstype.rb
index 0cadd647c..d018ae498 100644
--- a/app/models/forms/bulk_upload_lettings/needstype.rb
+++ b/app/models/forms/bulk_upload_lettings/needstype.rb
@@ -7,6 +7,7 @@ module Forms
 
       attribute :needstype, :integer
       attribute :year, :integer
+      attribute :organisation_id, :integer
 
       validates :needstype, presence: true
 
@@ -19,11 +20,11 @@ module Forms
       end
 
       def back_path
-        bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year:, needstype: })
+        bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year:, needstype:, organisation_id: })
       end
 
       def next_path
-        bulk_upload_lettings_log_path(id: "upload-your-file", form: { year:, needstype: })
+        bulk_upload_lettings_log_path(id: "upload-your-file", form: { year:, needstype:, organisation_id: })
       end
 
       def year_combo
diff --git a/app/models/forms/bulk_upload_lettings/prepare_your_file.rb b/app/models/forms/bulk_upload_lettings/prepare_your_file.rb
index b5069d908..b7d504642 100644
--- a/app/models/forms/bulk_upload_lettings/prepare_your_file.rb
+++ b/app/models/forms/bulk_upload_lettings/prepare_your_file.rb
@@ -7,6 +7,7 @@ module Forms
 
       attribute :year, :integer
       attribute :needstype, :integer
+      attribute :organisation_id, :integer
 
       def view_path
         case year
@@ -19,15 +20,16 @@ module Forms
 
       def back_path
         if have_choice_of_year?
-          Rails.application.routes.url_helpers.bulk_upload_lettings_log_path(id: "year", form: { year: })
+          Rails.application.routes.url_helpers.bulk_upload_lettings_log_path(id: "year", form: { year:, organisation_id: })
+        elsif organisation_id.present?
+          lettings_logs_organisation_path(organisation_id)
         else
           Rails.application.routes.url_helpers.lettings_logs_path
         end
       end
 
       def next_path
-        page_id = year == 2022 ? "needstype" : "upload-your-file"
-        bulk_upload_lettings_log_path(id: page_id, form: { year:, needstype: })
+        bulk_upload_lettings_log_path(id: "upload-your-file", form: { year:, needstype:, organisation_id: })
       end
 
       def legacy_template_path
diff --git a/app/models/forms/bulk_upload_lettings/upload_your_file.rb b/app/models/forms/bulk_upload_lettings/upload_your_file.rb
index f501da811..256fb971b 100644
--- a/app/models/forms/bulk_upload_lettings/upload_your_file.rb
+++ b/app/models/forms/bulk_upload_lettings/upload_your_file.rb
@@ -12,7 +12,6 @@ module Forms
       attribute :file
       attribute :current_user
       attribute :organisation_id, :integer
-      attr_accessor :request
 
       validates :file, presence: true
       validate :validate_file_is_csv
@@ -22,13 +21,7 @@ module Forms
       end
 
       def back_path
-        organisation_id = request.query_parameters[:organisation_id]
-        if organisation_id.present?
-          lettings_logs_organisation_path(organisation_id)
-        else
-          page_id = year == 2022 ? "needstype" : "prepare-your-file"
-          bulk_upload_lettings_log_path(id: page_id, form: { year:, needstype: })
-        end
+        bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year:, needstype:, organisation_id: })
       end
 
       def year_combo
@@ -36,7 +29,7 @@ module Forms
       end
 
       def next_path
-        bulk_upload_lettings_log_path(id: "checking-file", form: { year: })
+        bulk_upload_lettings_log_path(id: "checking-file", form: { year:, organisation_id: })
       end
 
       def save!
@@ -46,7 +39,7 @@ module Forms
           year:,
           needstype:,
           filename: file.original_filename,
-          organisation_id: organisation_id || current_user.organisation_id,
+          organisation_id:,
         )
 
         storage_service.write_file(bulk_upload.identifier, File.read(file.path))
diff --git a/app/models/forms/bulk_upload_lettings/year.rb b/app/models/forms/bulk_upload_lettings/year.rb
index e199559fa..52f4900d6 100644
--- a/app/models/forms/bulk_upload_lettings/year.rb
+++ b/app/models/forms/bulk_upload_lettings/year.rb
@@ -6,6 +6,7 @@ module Forms
       include Rails.application.routes.url_helpers
 
       attribute :year, :integer
+      attribute :organisation_id, :integer
 
       validates :year, presence: true
 
@@ -20,11 +21,15 @@ module Forms
       end
 
       def back_path
-        lettings_logs_path
+        if organisation_id.present?
+          lettings_logs_organisation_path(organisation_id)
+        else
+          lettings_logs_path
+        end
       end
 
       def next_path
-        bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year: })
+        bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year:, organisation_id: })
       end
 
       def save!
diff --git a/app/models/forms/bulk_upload_sales/checking_file.rb b/app/models/forms/bulk_upload_sales/checking_file.rb
index a37be3ccb..299bba663 100644
--- a/app/models/forms/bulk_upload_sales/checking_file.rb
+++ b/app/models/forms/bulk_upload_sales/checking_file.rb
@@ -6,6 +6,7 @@ module Forms
       include Rails.application.routes.url_helpers
 
       attribute :year, :integer
+      attribute :organisation_id, :integer
 
       def view_path
         "bulk_upload_sales_logs/forms/checking_file"
diff --git a/app/models/forms/bulk_upload_sales/guidance.rb b/app/models/forms/bulk_upload_sales/guidance.rb
index 28ca6c3b5..e838c62df 100644
--- a/app/models/forms/bulk_upload_sales/guidance.rb
+++ b/app/models/forms/bulk_upload_sales/guidance.rb
@@ -7,6 +7,7 @@ module Forms
 
       attribute :year, :integer
       attribute :referrer
+      attribute :organisation_id, :integer
 
       def view_path
         "bulk_upload_shared/guidance"
@@ -15,7 +16,7 @@ module Forms
       def back_path
         case referrer
         when "prepare-your-file"
-          bulk_upload_sales_log_path(id: "prepare-your-file", form: { year: })
+          bulk_upload_sales_log_path(id: "prepare-your-file", form: { year:, organisation_id: })
         when "home"
           root_path
         else
diff --git a/app/models/forms/bulk_upload_sales/prepare_your_file.rb b/app/models/forms/bulk_upload_sales/prepare_your_file.rb
index 387f6239f..1019ecf77 100644
--- a/app/models/forms/bulk_upload_sales/prepare_your_file.rb
+++ b/app/models/forms/bulk_upload_sales/prepare_your_file.rb
@@ -6,6 +6,7 @@ module Forms
       include Rails.application.routes.url_helpers
 
       attribute :year, :integer
+      attribute :organisation_id, :integer
 
       def view_path
         case year
@@ -19,13 +20,15 @@ module Forms
       def back_path
         if have_choice_of_year?
           Rails.application.routes.url_helpers.bulk_upload_sales_log_path(id: "year", form: { year: })
+        elsif organisation_id.present?
+          sales_logs_organisation_path(organisation_id)
         else
           Rails.application.routes.url_helpers.sales_logs_path
         end
       end
 
       def next_path
-        bulk_upload_sales_log_path(id: "upload-your-file", form: { year: })
+        bulk_upload_sales_log_path(id: "upload-your-file", form: { year:, organisation_id: })
       end
 
       def legacy_template_path
diff --git a/app/models/forms/bulk_upload_sales/upload_your_file.rb b/app/models/forms/bulk_upload_sales/upload_your_file.rb
index 83cc12def..49c884908 100644
--- a/app/models/forms/bulk_upload_sales/upload_your_file.rb
+++ b/app/models/forms/bulk_upload_sales/upload_your_file.rb
@@ -11,7 +11,6 @@ module Forms
       attribute :file
       attribute :current_user
       attribute :organisation_id, :integer
-      attr_accessor :request
 
       validates :file, presence: true
       validate :validate_file_is_csv
@@ -21,12 +20,7 @@ module Forms
       end
 
       def back_path
-        organisation_id = request.query_parameters[:organisation_id]
-        if organisation_id.present?
-          sales_logs_organisation_path(organisation_id)
-        else
-          bulk_upload_sales_log_path(id: "prepare-your-file", form: { year: })
-        end
+        bulk_upload_sales_log_path(id: "prepare-your-file", form: { year:, organisation_id: })
       end
 
       def year_combo
diff --git a/app/models/forms/bulk_upload_sales/year.rb b/app/models/forms/bulk_upload_sales/year.rb
index 85959c4e5..769f566c0 100644
--- a/app/models/forms/bulk_upload_sales/year.rb
+++ b/app/models/forms/bulk_upload_sales/year.rb
@@ -6,6 +6,7 @@ module Forms
       include Rails.application.routes.url_helpers
 
       attribute :year, :integer
+      attribute :organisation_id, :integer
 
       validates :year, presence: true
 
@@ -20,7 +21,11 @@ module Forms
       end
 
       def back_path
-        sales_logs_path
+        if organisation_id.present?
+          sales_logs_organisation_path(organisation_id)
+        else
+          sales_logs_path
+        end
       end
 
       def next_path
diff --git a/app/views/bulk_upload_lettings_logs/forms/checking_file.html.erb b/app/views/bulk_upload_lettings_logs/forms/checking_file.html.erb
index 7524072a5..2e6d4cd10 100644
--- a/app/views/bulk_upload_lettings_logs/forms/checking_file.html.erb
+++ b/app/views/bulk_upload_lettings_logs/forms/checking_file.html.erb
@@ -6,6 +6,7 @@
   <div class="govuk-grid-column-two-thirds">
     <%= form_with model: @form, scope: :form, url: bulk_upload_lettings_log_path(id: "prepare-your-file"), method: :patch do |f| %>
       <%= f.hidden_field :year %>
+      <%= f.hidden_field :organisation_id %>
 
       <span class="govuk-caption-l">Upload lettings logs in bulk (<%= @form.year_combo %>)</span>
       <h1 class="govuk-heading-l">We’re checking the file</h1>
diff --git a/app/views/bulk_upload_lettings_logs/forms/needstype.erb b/app/views/bulk_upload_lettings_logs/forms/needstype.erb
index 6deec7e1d..644dd9f5f 100644
--- a/app/views/bulk_upload_lettings_logs/forms/needstype.erb
+++ b/app/views/bulk_upload_lettings_logs/forms/needstype.erb
@@ -7,6 +7,7 @@
     <%= form_with model: @form, scope: :form, url: bulk_upload_lettings_log_path(id: "needstype"), method: :patch do |f| %>
       <%= f.govuk_error_summary %>
       <%= f.hidden_field :year %>
+      <%= f.hidden_field :organisation_id %>
 
       <%= f.govuk_collection_radio_buttons :needstype,
             @form.options,
diff --git a/app/views/bulk_upload_lettings_logs/forms/prepare_your_file_2024.html.erb b/app/views/bulk_upload_lettings_logs/forms/prepare_your_file_2024.html.erb
index 45ce4b385..7657396f1 100644
--- a/app/views/bulk_upload_lettings_logs/forms/prepare_your_file_2024.html.erb
+++ b/app/views/bulk_upload_lettings_logs/forms/prepare_your_file_2024.html.erb
@@ -6,6 +6,7 @@
   <div class="govuk-grid-column-two-thirds">
     <%= form_with model: @form, scope: :form, url: bulk_upload_lettings_log_path(id: "prepare-your-file"), method: :patch do |f| %>
       <%= f.hidden_field :year %>
+      <%= f.hidden_field :organisation_id %>
 
       <span class="govuk-caption-l">Upload lettings logs in bulk (<%= @form.year_combo %>)</span>
       <h1 class="govuk-heading-l">Prepare your file</h1>
diff --git a/app/views/bulk_upload_lettings_logs/forms/upload_your_file.html.erb b/app/views/bulk_upload_lettings_logs/forms/upload_your_file.html.erb
index 767d3901c..2814eb1ea 100644
--- a/app/views/bulk_upload_lettings_logs/forms/upload_your_file.html.erb
+++ b/app/views/bulk_upload_lettings_logs/forms/upload_your_file.html.erb
@@ -7,7 +7,7 @@
     <%= form_with model: @form, scope: :form, url: bulk_upload_lettings_log_path(id: "upload-your-file"), method: :patch do |f| %>
       <%= f.hidden_field :year %>
       <%= f.hidden_field :needstype %>
-      <%= f.hidden_field :organisation_id, value: params[:organisation_id] %>
+      <%= f.hidden_field :organisation_id %>
 
       <%= f.govuk_error_summary %>
 
diff --git a/app/views/bulk_upload_lettings_logs/forms/year.html.erb b/app/views/bulk_upload_lettings_logs/forms/year.html.erb
index 8ba1c280f..4fef16dd7 100644
--- a/app/views/bulk_upload_lettings_logs/forms/year.html.erb
+++ b/app/views/bulk_upload_lettings_logs/forms/year.html.erb
@@ -4,6 +4,7 @@
 
 <%= form_with model: @form, scope: :form, url: bulk_upload_lettings_log_path(id: "year"), method: :patch do |f| %>
   <%= f.govuk_error_summary %>
+  <%= f.hidden_field :organisation_id %>
 
   <%= f.govuk_collection_radio_buttons :year,
         @form.options,
diff --git a/app/views/bulk_upload_sales_logs/forms/checking_file.html.erb b/app/views/bulk_upload_sales_logs/forms/checking_file.html.erb
index c47a97d5e..8bcef5cad 100644
--- a/app/views/bulk_upload_sales_logs/forms/checking_file.html.erb
+++ b/app/views/bulk_upload_sales_logs/forms/checking_file.html.erb
@@ -6,6 +6,7 @@
   <div class="govuk-grid-column-two-thirds">
     <%= form_with model: @form, scope: :form, url: bulk_upload_sales_log_path(id: "prepare-your-file"), method: :patch do |f| %>
       <%= f.hidden_field :year %>
+      <%= f.hidden_field :organisation_id %><%= f.hidden_field :organisation_id %>
 
       <span class="govuk-caption-l">Upload sales logs in bulk (<%= @form.year_combo %>)</span>
       <h1 class="govuk-heading-l">We’re checking the file</h1>
diff --git a/app/views/bulk_upload_sales_logs/forms/prepare_your_file_2024.html.erb b/app/views/bulk_upload_sales_logs/forms/prepare_your_file_2024.html.erb
index 81c947e15..2a64de689 100644
--- a/app/views/bulk_upload_sales_logs/forms/prepare_your_file_2024.html.erb
+++ b/app/views/bulk_upload_sales_logs/forms/prepare_your_file_2024.html.erb
@@ -6,6 +6,7 @@
   <div class="govuk-grid-column-two-thirds">
     <%= form_with model: @form, scope: :form, url: bulk_upload_sales_log_path(id: "prepare-your-file"), method: :patch do |f| %>
       <%= f.hidden_field :year %>
+      <%= f.hidden_field :organisation_id %>
 
       <span class="govuk-caption-l">Upload sales logs in bulk (<%= @form.year_combo %>)</span>
       <h1 class="govuk-heading-l">Prepare your file</h1>
diff --git a/app/views/bulk_upload_sales_logs/forms/upload_your_file.html.erb b/app/views/bulk_upload_sales_logs/forms/upload_your_file.html.erb
index 301dffd46..75350ae9e 100644
--- a/app/views/bulk_upload_sales_logs/forms/upload_your_file.html.erb
+++ b/app/views/bulk_upload_sales_logs/forms/upload_your_file.html.erb
@@ -6,7 +6,7 @@
   <div class="govuk-grid-column-two-thirds">
     <%= form_with model: @form, scope: :form, url: bulk_upload_sales_log_path(id: "upload-your-file"), method: :patch do |f| %>
       <%= f.hidden_field :year %>
-      <%= f.hidden_field :organisation_id, value: params[:organisation_id] %>
+      <%= f.hidden_field :organisation_id %>
 
       <%= f.govuk_error_summary %>
 
diff --git a/app/views/bulk_upload_sales_logs/forms/year.html.erb b/app/views/bulk_upload_sales_logs/forms/year.html.erb
index d8aa09172..2aaa7c0f8 100644
--- a/app/views/bulk_upload_sales_logs/forms/year.html.erb
+++ b/app/views/bulk_upload_sales_logs/forms/year.html.erb
@@ -4,6 +4,7 @@
 
 <%= form_with model: @form, scope: :form, url: bulk_upload_sales_log_path(id: "year"), method: :patch do |f| %>
   <%= f.govuk_error_summary %>
+  <%= f.hidden_field :organisation_id %>
 
   <%= f.govuk_collection_radio_buttons :year,
         @form.options,
diff --git a/app/views/logs/_create_for_org_actions.html.erb b/app/views/logs/_create_for_org_actions.html.erb
index 748c4c278..4d7ecc6fc 100644
--- a/app/views/logs/_create_for_org_actions.html.erb
+++ b/app/views/logs/_create_for_org_actions.html.erb
@@ -2,11 +2,11 @@
   <% if @organisation.data_protection_confirmed? %>
     <% if current_page?(controller: 'organisations', action: 'lettings_logs') %>
       <%= govuk_button_to "Create a new lettings log for this organisation", lettings_logs_path(lettings_log: { owning_organisation_id: @organisation.id }, method: :post), class: "govuk-!-margin-right-6" %>
-      <%= govuk_button_link_to "Upload lettings logs in bulk", bulk_upload_lettings_log_path(id: "upload-your-file", form: { year: FormHandler.instance.current_collection_start_year }, organisation_id: @organisation.id), secondary: true %>
+      <%= govuk_button_link_to "Upload lettings logs in bulk", bulk_upload_lettings_log_path(id: "prepare-your-file", form: { year: FormHandler.instance.current_collection_start_year, organisation_id: @organisation.id }), secondary: true %>
 <% end %>
     <% if current_page?(controller: 'organisations', action: 'sales_logs') %>
       <%= govuk_button_to "Create a new sales log for this organisation", sales_logs_path(sales_log: { owning_organisation_id: @organisation.id }, method: :post), class: "govuk-!-margin-right-6" %>
-      <%= govuk_button_link_to "Upload sales logs in bulk", bulk_upload_sales_log_path(id: "upload-your-file", form: { year: FormHandler.instance.current_collection_start_year }, organisation_id: @organisation.id), secondary: true %>
+      <%= govuk_button_link_to "Upload sales logs in bulk", bulk_upload_sales_log_path(id: "prepare-your-file", form: { year: FormHandler.instance.current_collection_start_year, organisation_id: @organisation.id }), secondary: true %>
 <% end %>
   <% end %>
 </div>