Ryanair is 6 based with a large amount of non based flights.
Easyjet is 5 A320 and 3 A319 and only a few non based flights.
A correction to an earlier post as it seems my finger slipped, Travel Service (QS) is 2x B737 and not the B767 as I posted.
Flybe is something like 9 or 10 based, but I'm not 100%.