HITLER'S wartime invasion plan of Britain, which reveals Dorset could have been in the firing line, has sold at auction for almost £800.

As reported in the Daily Echo, the "chilling" document, compiled in the summer of 1940, contains reconnaissance photographs and maps of Studland Bay and Christchurch Bay.

The pack, 'Militargeograogische Angaben uber England' – or 'military geographic information about England' – was sent to German headquarters in western Europe in readiness for Operation Sea Lion, the German invasion of Britain.

Historians say the images, likely taken from tourism postcards, were distributed to give German troops the best idea of the landscape they would encounter after landing on British shores.

The pack had been consigned for sale by a European private collector with C&T Auctions of Ashford, Kent. It was expected to fetch £350. However, it instead fetched £780.

With air losses increasing, Hitler postponed Sea Lion indefinitely on September 17 1940 and it was never put into action.