Ok, the FPL route was DJL A6 ARSIL B3 DVR
but we negociated DJL - REM - ABB, then got direct DET, and the clearance to Biggin Hill was: "Leave DET on radial 300, intercept ILS, cleared for approach".
Needless to say, this was in lower airpsace (FL100 if I remind correctly).
Hope this answers your question.