Turkish
I am in the "when" not "if" club and surprised it hasn't been announced for 2014 although there is still just about time for a June/July start.
I know you can't just use passenger numbers per airport as a guide but Bristol is one of a few 6 million pax and above airports not to have TK (exc FR dominated ones and probably the unlukiest - Glasgow).
There are even airports with lower figures with TK services (excluding Germany obviously) such as Bilbao, Valencia, Naples and Bologna. I realise there is more to it that that such as ex-pat population, nearby airports, competition, the greater metro area but taking all that into account I still believe Bristol will be the next UK airport although Glasgow I am sure think they deserve it after actually making it into a TK press release only to have EDI to start.
Pete