An autobiography claiming to be the memoirs of Jack the Ripper has been unearthed at a Somerset museum.

Experts said the book, written by a James Carnac, is almost certainly a fake but is in places "very accurate" and the earliest work of its kind.

It was discovered amongst the effects of a children's entertainer, handed to Montacute TV Radio and Toy Museum.

The book, thought to have been written in the 1920s, is typewritten and bound with a cardboard cover entitled 'The Autobiography of James Carnac'.

The author dedicated it "with admiration and respect to the retired members of the Metropolitan Police Force in spite of whose energy and efficiency I have lived to write this book".