All indications are that airline recruiting is picking up. You would be barking mad to give up your fATPL work at this stage.
Yes, there is ample General Aviation opportunity in the RAF through RAFFCA. But so many people are out of area so often thanks to overstretch and Bliar's wars that few have much free time to devote to GA - perhaps not unreasonably any time they do get out of the sandpit they like to spend with their families.