beach access for avgas heads
If you don't mind a channel crossing,
Ostend (EBOS) is a 600m walk from the beach (from the terminal exit to the sand).
Quiberon (LFEQ) has a hotel at the end of the runway which has beach access
and in the UK I can recommend:
Shoreham just 1 km from Shoreham beach.
Manston and Newquay are also good, but they require folding bikes, a taxi fare or a somewhat longer walk to get your feet wet.
Maybe you want to specify a bit more what it is you're looking for ? Cheap landing fees ? Walking distance ? Hotel facilities ? A lively city nearby ? A 1 mile runway ? an IFR approach ?