7021691 Craftsman Daniel Dinnen of the Royal Electrical and Mechanical Engineers, died on the 28th December 1943. He was born in Eire and living in London when he enlisted. I have been unable to locate this man on the Commonwealth War Graves Commission roll of honour website.
At the going down of the sun, and in the morning, WE WILL REMEMBER THEM.
Ancestry.co.uk (1939-1945 Roll of Honour)