Hi, I had my dyno run at Track n Road only last Wednesday at 16:00 and it was £60 cash. Be warned though! Getting through to them is very difficult, it took me two days and two voicemail messages left on their machine. It is so noisy in there, no one can here the phone and their time is taken up with looking after the cars.
If you get straight through to them, then buy yourself a Lotto lucky dip and ride the luck train until it runs out lol.
Very thorough chaps, very accurate system, your car will be in safe hands!