Schools
I found Clacton good fun as I upgraded from PLL(D) until I met the CFI and then moved to the NWFG at North Weald and had a great time. I also liked Andrewsfield as they are friendly and have a number of instructors so you can find one that fits. Clacton is a fair run from London due to the road layout on the coast.
I was at Stapleford for a while and SIRALLAN Sugar is based there. His ego is er well as you'd expect which can be entertaining!