Climb Climb are you saying that if you get a BS then the ATCO could pass you traffic info? My understanding is that under a BS, traffic info is specifically prohibited even if the ATCO can see you are in a head-on. You need a Traffic Service to get that info.
Farnborough are unfailingly excellent but the old FIS from them was worth no more (to the pilot) than a listening watch on any other radar unit. When I call them I always ask for an RIS/TS.