I can give you some idea, but only a fragmented picture. Your results may vary.
Of those I did my CPL/IR with (at a small Bournemouth FTO), of 15 I am in touch with:
2 at FR, 2 more didn't pass the assessment
1 flying the ATR on the continent
1 FI
1 at Flybe
Of the rest, one is working at EZY as cabin crew, and the rest are working outside aviation and still looking.
So, just over half got interviews, of whom 5/15 are employed in some form of flying job.