Southbound upper a/w freq over BPK.

[Lump Jockey]

Would someone be so kind as to give me the upper airway frequency for aircraft on UA2? or UB3? (not even sure it's one of those, UA1/B4 maybe?!):o travelling southbound over BPK, or in the vicinity of that? Thanks.
Secondly, a bit of guestimation here I suppose, but if I can see a high-flyer trailing on the horizon, roughly how far away would it be? 60 miles? More?
Cheers!:)

[atco-matic]

Lumpjockey, between FL220- FL300, travelling southbound on UA1 you would talk to 132.45 and northbound on UB4 you would talk to 132.6. At FL310 and above UA1 would be 135.42, and UB4 would be 127.42. this is actually south of BPK, north of that is the Daventry sectors- did you want those frequencies?

[Lump Jockey]

Yes, thanks! Any more in this BPK region for the Upper Greens would be helpful too and any more you have!;)