added links failing due to no route

app/helpers/tab_nav_helper.rb

@@ -6,6 +6,11 @@ module TabNavHelper
     [govuk_link_to(link_text, user), "<span class=\"govuk-visually-hidden\">User </span><span class=\"govuk-!-font-weight-regular app-!-colour-muted\">#{user.email}</span>"].join("\n")
   end
 
+  def scheme_cell(scheme)
+    link_text = scheme.service_name.presence
+    [govuk_link_to(link_text, scheme), "<span class=\"govuk-visually-hidden\">Scheme </span><span class=\"govuk-!-font-weight-regular app-!-colour-muted\">#{scheme.service_name}</span>"].join("\n")
+  end
+
   def org_cell(user)
     role = "<span class=\"app-!-colour-muted\">#{user.role.to_s.humanize}</span>"
     [user.organisation.name, role].join("\n")

app/views/schemes/_scheme_list.html.erb

@@ -29,7 +29,7 @@
       <%= table.body do |body| %>
         <%= body.row do |row| %>
           <% row.cell(text: scheme.code) %>
-          <% row.cell(text: scheme.service_name) %>
+          <% row.cell(text: simple_format(scheme_cell(scheme), {}, wrapper_tag: "div")) %>
           <% row.cell(text: scheme.organisation.name) %>
           <% row.cell(text: scheme.created_at.to_formatted_s(:govuk_date)) %>
         <% end %>