Stansted Director is not an en-route ATS unit. An en-route controller is an area controller ie one who controls an area rather than a particular airport's movements, hence my previous ie of Manchester, Scottish or London when referring to the UK. The guys who are sat in Swanwick or Prestwick. This explanation may be factually untidy as I am not an ATCO but a pilot so feel free to correct my terminology.
To reiterate my point, the Scottish controllers require a mandatory passing level call on initial contact, in the spirit of my previous reference which was taken from the latest edition of...................
CAP413 !!!!