anchor.diff:  
     # remove cookies
     if (req.backend != licensify) {
  -    unset req.http.cookie;
  -  }
  +    unset req.http.Cookie;
  +  }
  +
     # purge individual URLs from the cache
  -  if(req.request == "PURGE") {
  -    if(!client.ip ~ purge_acl) {
  +  if (req.request == "PURGE") {
  +    if (!client.ip ~ purge_acl) {
         error 405 "Not allowed";
       } else {
   <% if scope.lookupvar('varnish::varnish_version') == 3 %>
  
positive.code:   unset beresp.http.X-Rack-Cache;
    unset beresp.http.X-Runtime;
  
    if (beresp.http.Location) {
    <% if @govuk_platform == "production" %>
      set beresp.http.Location = regsub(beresp.http.Location, "^(\w+://[^.]+\.[^.]+\.alphagov\.co\.uk)", "https://www.gov.uk");
  
negative.code: 
    # If the backend says no-cache or no-store, we should not cache
    if (beresp.http.cache-control ~ "no-cache" || beresp.http.cache-control ~ "no-store") { 
       return(pass);
    } 
  
    if (beresp.ttl > 0s) {
  