Hizb ut-Tahrir is an extremist, Islamic group. Its members work freely at the Home Office, even dealing with matters of security and immigration. Political correctness in all its stupidity thinks this reasonable.
Incidentally, they do not even have to declare the affiliation. I wonder if BNP members, who are after all, a democratic party, would receive such treatment?
Our politicians look blank and glassy-eyed when you try to point out their double standards to them and that they are playing into the hands of parties like BNP! It is THEIR fault.