Neo
What avenues are available to you to appeal the the Reg's in the UK? We have the Administrative Appeals Tribunal. It was through this avenue that the Reg's were challenged and subsequently changed. IMO you need to use a process that is unbiased and one whose outcome's are be legally binding.
I think momentum is building for change although I also think at present it could go either way as far as ICAO is concerned. If another significant ICAO state comes on board with a system either similar to Australia and the US or something new, such as abolish the CV test, then I think the pendulum could well swing our way. The thing is legal precedents are set all the time. This one is just waiting to happen and while the CV thing worldwide is in such a mess with varying standards and authorities not able to get there crap in a pile the sooner it happens the more likely it is to succeed.
The world is a changing place. The UK could well be the one to do it but it will take more than one pilot to take it on and you will need legal counsel. Perhaps there is a lawyer specialising in aviation that would take it on on a "no win no pay" basis. It would make his/her career if they won.
Cheers