Coordination with Brussels
I want to fly Cambridge to Antwerp at or below FL100.
If I were overflying Brussels I'd simply file CLN SASKI COA NIK. But for EBBRTMA arrivals, that gets caught by a routing restriction and I have to file CLN JACKO DVR KOK NIK. I have a feeling that Brussels would be very happy to accept me CLN COA even if I'm landing at Antwerp, because the restriction is designed for EBBR arrivals at a much higher level.
On which frequency would it be most appropriate to make my rerouting request, which will require coordination with Brussels? Presumably it's better to wait until TC hands me over to AC (where), or should I just ask Essex once airborne? Does a RMK (e.g. "REQ CLN SASKI COA") on the FPL get onto the strip, and if so does that help?
Thanks