Maybe Monarch in the North not sure, but you may have to go to Luton FFv/FLS used to, they are now SRTechnics. The only other could be MyTravel.
You'd be best writing to the airlines and asking or have a look at their websites, try Monarch/SRT/MyTravel/First Choice/Thomas Cook/Thomson etc.
May also be worth having a look at airmech.o.uk.