a new ride this year in aid of Friends of Pepenbury ( Pepenbury is a centre for adults with learning difficulties ) two routes, 35 km and 106km. Great scenery, the occasional hill, feeding stops. Easy access by public transport: T Wells and High Brooms stations within a couple of miles.
have a look on the BC website:
http://www.britishcycling.org.uk/events/details/79927/Pepenbury-Sportive.