depends on a few other bits and pieces requirements wise.
before i do give you a brief and quick rundown of what im aware of so you can start applying, you really should be find this stuff out for yourself. noone is going to spoon feed you into a job and part of being a pilot (especially wanting to be an airline pilot) is keeping yourself aware of what is going on in the industry. You clearly have a computer and the internet so searching and researching for positions is something you should be getting adept at.
BA Cityflyer - Trainee Entry Pilot Programme
Wizzair - if you have 240hrs, joc, specific a levels etc
Jet 2 -can't remember anyting specific off the top of my head
Flybe - if they are still taking new applicants.
ryanair - if you have £30k
cathay - second officer programme
you might also consider sending a cv to:
suckling airways
eastern airways
dhl
and the list goes on and on and on
best of luck