The north-west Norfolk coast is on my regular bimble route; plenty to see around the Wash (AIAA with military ac during the week - make good calls and lookout), and then on up past Heacham to Sunny Hunny (Hunstanton), Blakeney etc; wander inland a bit to see Sandringham and the old airfields already mentioned (not sure how you confuse Gt Massingham with West Raynham - the former is mainly gone, while the latter is mainly intact!); have a look at Sculthorpe too - mahoosive! Drop into Shipdham for a friendly cup of tea (but watch for gliders). There can be quite a bit of GA around the coast at the weekends, but at around 2500', I usually seem to be above other traffic; again, good lookout applies.