Manchester handling, as far as im aware, have a very good rep. They have been taken over by Flight Support, but it doesn't seemed to have changed them much if at all.
As you can see from this thread, this is who they handle ......
http://www.pprune.org/forums/showthread.php?t=258304
The company has been in Manchester for about 3 years or so and with FS now behind them should be a good company to join. Extra cash always helps

and other UK bases