Hi EZYboy,
MyLite do not employ Mylite only crew we are all MYT crew, we do both lite and charter, the mixture of doing both is great!!!!
As Sammy has said MYT are a great company to work for, don't let all the press put you off, (I'm not just saying MYT are great cos I work for them!)
Virgin as far as I know don't have crew based out of MAN they use LHR and LGW crew, BMI are recruiting for mainline but at LHR, not sure how you get to MAN, - internal transfer maybe??
Have you tried
http://www.aviationjobsearch.com they have loads of Crew jobs on there plus many others!!!
Good Luck!!!
Crew_MYT