12 hours of flight time in an SEP or TMG aircraft, to include 6 hours PIC and 12 take offs/landings in the 12 months preceding the revalidation.
Also to include one hour with an instructor, and don't forget to make sure that you have the experience stamp/signature in your licence before the last date it is valid.
If you are in Hampshire and need a friendly instructor to fly with you in an interesting SEP, you could do worse than ask Ppruner Irv (Irv Lee at Popham in real life, he doesn't try to hide his identity!). If he's unavailable, drop me a PM, I might be able to help out.
G