The only realistic employment opportunities at "the 250 hour level" for airlines, are through one or other of the various cadet programmes. B.A, Easyjet, Thomas Cook, Monarch etc. all utilize affiliated integrated school training programmes for these limited cadet schemes, as and when they do arise.
It is generally unrealistic to suppose that there are airline opportunities outside of these schemes for pilots with a raw CPL and a couple of hundred hours. You would need to find a way of progressing up the ladder, to put you in the 1500-2000 hour level, to stand any chance of competing with the "experienced" recruitment market at the accepted entry level.
This is a situation many people don't seem to appreciate.
A CPL/IR and 250 hours isn't really anything more than an "aerial work" licence for practical purposes (outside of these schemes) and it is generally in this segment of the marketplace that experience is likely to be acquired, albeit very difficult in the current overcrowded supply base.