Pielander,
I did a very good, fun course at Norfolk Gliding Club, based at Tibbenham, midway between Diss and Norwich, Very friendly, good grub, reasonable accomodation, with a fleet of aerotugs (Rollason Condors when I was there). The field was home to a US bomber group during the last pan-european disagreement. I recommend it!
Cheers
Tailwinds.