I have been flying with the Pilot Centre for over 3 years and I have not had any problems. They are always friendly and only once did I feel that I got ripped off after a checkflight which should have been an hour ended up as 3 flights over 2 1/2 hours. That has been the only frustration. Apart from that I have enjoyed flying from there and their prices are great. To hire a PA28 for £140 which includes all landing fees is a good price especially so close to London.