I can recall as a kid in 1966 visiting family who lived on the seafront at Selsey. Used to see aircraft doing circuits offshore, coming along the coast climbing out of somewhere towards Portsmouth, then right-hand out over the sea as they came abeam Selsey. Heavy military types, can't really recall if they were 2 or 4 engined, but I would guess 4. Would they have been from Thorney ? What types would be doing circuits there at this time ?