Shouldn't the BGA then lobby EASA? I bet of the BGA actively talked with EASA about having txpdrs fitted then EASA would make an excemption in no time. Or perhaps most of the BGA memebers do not want transponders? What is the BGA view on transponders (out of interest)?
I am investigating FLARM, and I understand they maybe be working on a "black box" FLARM for powered aircraft which can utilise existing GPS's and displays....so it should be significantly cheaper. I'll buy one as soon as one appears on the market.