VLM
I too have flown them many times from LCY to Ronaldsway in the Isle of Man and must say they are fabulous. Often remarkably cheap, it's a very professional, efficient full service operation the only criticism would be they do not operate enough times a day!
From reading these forums I have noted that this specific route is referred to as a positioning flight as it is only operated once a day which can not make a huge profit but thank goodness because I have a serious aversion to flying Euromanx and would rather poke my eyes out than use Gatwick South Terminal (flybe).
Bring back regional flights to Heathrow, build a third runway and a sixth terminal just get on with it...
Richard