<% content_for :context, attachable.title %>
<% content_for :page_title, "Reorder attachments" %>
<% content_for :title, "Reorder attachments" %>
<% content_for :title_margin_bottom, 6 %>
<% content_for :back_link do %>
  <%= render "govuk_publishing_components/components/back_link", {
    href: attachable_attachments_path(attachable)
  } %>
<% end %>

<div class="govuk-grid-row">
  <section class="govuk-grid-column-two-thirds">
    <%= form_tag [:order, :admin, typecast_for_attachable_routing(attachable), Attachment], method: :put do %>
      <%= render "govuk_publishing_components/components/reorderable_list", {
        items: attachable.attachments.includes(:attachment_data).map do |attachment|
          {
            id: attachment.id,
            title: attachment.title,
            description: attachment_attributes(attachment)
          }
        end
      } %>

      <%= render "govuk_publishing_components/components/button", {
        text: "Update order",
        margin_bottom: 8,
      } %>
    <% end %>
  </section>
</div>

<% content_for :context, attachable.title %>
<% content_for :page_title, "Reorder attachments" %>
<% content_for :title, "Reorder attachments" %>
<% content_for :title_margin_bottom, 6 %>

<div class="govuk-grid-row">
  <section class="govuk-grid-column-two-thirds">
    <%= form_tag [:order, :admin, typecast_for_attachable_routing(attachable), Attachment], method: :put do %>
      <%= render "govuk_publishing_components/components/reorderable_list", {
        items: attachable.attachments.includes(:attachment_data).map do |attachment|
          {
            id: attachment.id,
            title: attachment.title,
            description: attachment_attributes(attachment)
          }
        end
      } %>

      <div class="govuk-button-group govuk-!-margin-bottom-6">
        <%= render "govuk_publishing_components/components/button", {
          text: "Update order",
        } %>

        <a class="govuk-link" href="attachable_attachments_path(attachable)">Cancel</a>
      </div>
    <% end %>
  </section>
</div>

Replace attachment reorder back button with cancel button
Replace attachment reorder back button with cancel button

In our like for like approach we're using cancel buttons instead of back buttons in the new design system pages
