It would seem the real target is to hit the revenues of the Gulf 3 and Turkish Airlines in the guise of "security".
The British May government is a subservient lapdog to the US administration-much like Blair was, no doubt also keen to hit the revenues of the above named airlines to the advantage of British Airways.
However the UK ban will not affect QR/EK/EY. It will affect TK, that is until Erdoğan threatens to close a few military bases to their NATO allies.