I had just find the location after I checked back here, that would have saved me some time, so thanks!
The request/GET URL is : “.co.uk/lytics/piwik/plugins/CoreHome/angularjs/quick-access/quick-access.directive.html?cb=f5baf68d60831fe50f6f37ebb7564c5c”
The Response location, copied from the section you circled is also ".co.uk/lytics/piwik/plugins/CoreHome/angularjs/quick-access/quick-access.directive?cb=f5baf68d60831fe50f6f37ebb7564c5c
and then the 403 refusal (as a new user I can only post one image per post, so apolgies for the post spam)