Some photos of the 'dragons teeth' and Fort Henry at Studland, Dorset Studland Beach Second World War walk
Some 20 years ago while helping (don't ask) one of my son's on his GCSE geography field work I came across a series of shallow craters at the back of Studland Beach (near the visitor centre) plus some live rifle ammunition dated (I think) 1942. Presumably remnants of pre-D-Day live firing exercises.
I worked on the National Nature Reserve there for three summers in 1989-72, long before the National Trust took over the whole area and tidied it up. Clearing away 20mm rounds ( presumably fired by aircraft ) from the dunes just behind the beach was a fairly regular activity ,and periodically the Army would pop by and have a little controlled explosion .in the present car park were the remains of a Sherman , and an early mark of Churchill, very much reduced to scrap.