diff --git a/app/controllers/bulk_upload_lettings_logs_controller.rb b/app/controllers/bulk_upload_lettings_logs_controller.rb
index c02202e42..93c5541f4 100644
--- a/app/controllers/bulk_upload_lettings_logs_controller.rb
+++ b/app/controllers/bulk_upload_lettings_logs_controller.rb
@@ -3,6 +3,8 @@ class BulkUploadLettingsLogsController < ApplicationController
   before_action :validate_data_protection_agrement_signed!
 
   def start
+    support_user_redirection and return if current_user.support?
+
     if have_choice_of_year?
       redirect_to bulk_upload_lettings_log_path(id: "year")
     else
@@ -51,7 +53,7 @@ private
               when "needstype"
                 Forms::BulkUploadLettings::Needstype.new(form_params)
               when "upload-your-file"
-                Forms::BulkUploadLettings::UploadYourFile.new(form_params.merge(current_user:, organisation_id: params[:org]))
+                Forms::BulkUploadLettings::UploadYourFile.new(form_params.merge(current_user:, request:))
               when "checking-file"
                 Forms::BulkUploadLettings::CheckingFile.new(form_params)
               else
@@ -60,6 +62,12 @@ private
   end
 
   def form_params
-    params.fetch(:form, {}).permit(:year, :needstype, :file)
+    params.fetch(:form, {}).permit(:year, :needstype, :file, :organisation_id)
+  end
+
+  def support_user_redirection
+    if params[:organisation_id].present?
+      redirect_to bulk_upload_lettings_log_path(id: "upload-your-file", form: { year: current_year }, organisation_id: params[:organisation_id])
+    end
   end
 end
diff --git a/app/controllers/bulk_upload_sales_logs_controller.rb b/app/controllers/bulk_upload_sales_logs_controller.rb
index ce4cd9c2a..1efa22499 100644
--- a/app/controllers/bulk_upload_sales_logs_controller.rb
+++ b/app/controllers/bulk_upload_sales_logs_controller.rb
@@ -3,6 +3,8 @@ class BulkUploadSalesLogsController < ApplicationController
   before_action :validate_data_protection_agrement_signed!
 
   def start
+    support_user_redirection and return if current_user.support?
+
     if have_choice_of_year?
       redirect_to bulk_upload_sales_log_path(id: "year")
     else
@@ -49,7 +51,7 @@ 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:, organisation_id: params[:org]))
+                Forms::BulkUploadSales::UploadYourFile.new(form_params.merge(current_user:, request:))
               when "checking-file"
                 Forms::BulkUploadSales::CheckingFile.new(form_params)
               else
@@ -58,6 +60,12 @@ private
   end
 
   def form_params
-    params.fetch(:form, {}).permit(:year, :file)
+    params.fetch(:form, {}).permit(:year, :file, :organisation_id)
+  end
+
+  def support_user_redirection
+    if params[:organisation_id].present?
+      redirect_to bulk_upload_sales_log_path(id: "upload-your-file", form: { year: current_year }, organisation_id: params[:organisation_id])
+    end
   end
 end
diff --git a/app/models/bulk_upload.rb b/app/models/bulk_upload.rb
index e193c0909..7af43ee28 100644
--- a/app/models/bulk_upload.rb
+++ b/app/models/bulk_upload.rb
@@ -3,7 +3,6 @@ class BulkUpload < ApplicationRecord
   enum rent_type_fix_status: { not_applied: "not_applied", applied: "applied", not_needed: "not_needed" }
 
   belongs_to :user
-  belongs_to :organisation, optional: true
 
   has_many :bulk_upload_errors, dependent: :destroy
 
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 16fff950f..f501da811 100644
--- a/app/models/forms/bulk_upload_lettings/upload_your_file.rb
+++ b/app/models/forms/bulk_upload_lettings/upload_your_file.rb
@@ -11,7 +11,8 @@ module Forms
       attribute :needstype, :integer
       attribute :file
       attribute :current_user
-      attribute :organisation_id
+      attribute :organisation_id, :integer
+      attr_accessor :request
 
       validates :file, presence: true
       validate :validate_file_is_csv
@@ -21,6 +22,7 @@ module Forms
       end
 
       def back_path
+        organisation_id = request.query_parameters[:organisation_id]
         if organisation_id.present?
           lettings_logs_organisation_path(organisation_id)
         else
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 cd25baea1..83cc12def 100644
--- a/app/models/forms/bulk_upload_sales/upload_your_file.rb
+++ b/app/models/forms/bulk_upload_sales/upload_your_file.rb
@@ -10,7 +10,8 @@ module Forms
       attribute :year, :integer
       attribute :file
       attribute :current_user
-      attribute :organisation_id
+      attribute :organisation_id, :integer
+      attr_accessor :request
 
       validates :file, presence: true
       validate :validate_file_is_csv
@@ -20,6 +21,7 @@ module Forms
       end
 
       def back_path
+        organisation_id = request.query_parameters[:organisation_id]
         if organisation_id.present?
           sales_logs_organisation_path(organisation_id)
         else
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 bbafc28b3..3218be947 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
@@ -7,6 +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.govuk_error_summary %>
 
diff --git a/app/views/bulk_upload_lettings_results/show.html.erb b/app/views/bulk_upload_lettings_results/show.html.erb
index 56448f24e..a39851850 100644
--- a/app/views/bulk_upload_lettings_results/show.html.erb
+++ b/app/views/bulk_upload_lettings_results/show.html.erb
@@ -23,4 +23,4 @@
   </div>
 </div>
 
-<%= govuk_button_link_to "Upload your file again", start_bulk_upload_lettings_logs_path %>
+<%= govuk_button_link_to "Upload your file again", start_bulk_upload_lettings_logs_path(organisation_id: @bulk_upload.organisation_id) %>
diff --git a/app/views/bulk_upload_lettings_results/summary.html.erb b/app/views/bulk_upload_lettings_results/summary.html.erb
index 8c36af632..8056e73d6 100644
--- a/app/views/bulk_upload_lettings_results/summary.html.erb
+++ b/app/views/bulk_upload_lettings_results/summary.html.erb
@@ -27,4 +27,4 @@
   <% end %>
 </div>
 
-<%= govuk_button_link_to "Upload your file again", start_bulk_upload_lettings_logs_path %>
+<%= govuk_button_link_to "Upload your file again", start_bulk_upload_lettings_logs_path(organisation_id: @bulk_upload.organisation_id) %>
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 36e7240dc..1bc615439 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
@@ -6,6 +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.govuk_error_summary %>
 
diff --git a/app/views/bulk_upload_sales_results/show.html.erb b/app/views/bulk_upload_sales_results/show.html.erb
index b7c838567..0764d60a8 100644
--- a/app/views/bulk_upload_sales_results/show.html.erb
+++ b/app/views/bulk_upload_sales_results/show.html.erb
@@ -23,4 +23,4 @@
   </div>
 </div>
 
-<%= govuk_button_link_to "Upload your file again", start_bulk_upload_sales_logs_path %>
+<%= govuk_button_link_to "Upload your file again", start_bulk_upload_sales_logs_path(organisation_id: @bulk_upload.organisation_id) %>
diff --git a/app/views/bulk_upload_sales_results/summary.html.erb b/app/views/bulk_upload_sales_results/summary.html.erb
index af504acbd..7ab737fca 100644
--- a/app/views/bulk_upload_sales_results/summary.html.erb
+++ b/app/views/bulk_upload_sales_results/summary.html.erb
@@ -27,4 +27,4 @@
   <% end %>
 </div>
 
-<%= govuk_button_link_to "Upload your file again", start_bulk_upload_sales_logs_path %>
+<%= govuk_button_link_to "Upload your file again", start_bulk_upload_sales_logs_path(organisation_id: @bulk_upload.organisation_id) %>
diff --git a/app/views/logs/_create_for_org_actions.html.erb b/app/views/logs/_create_for_org_actions.html.erb
index fe5d1d0ef..748c4c278 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 }, org: @organisation.id), secondary: true %>
+      <%= 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 %>
 <% 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 }, org: @organisation.id), secondary: true %>
+      <%= 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 %>
 <% end %>
   <% end %>
 </div>