Codebreaker Raymond Roberts will receive an MBE today for his services to the WWII decryption centre and codebreaking.
One of the court founder members of the Testery section at Bletchley, he was tasked with breaking the German High Command's Tunny code.
The decryptions are credited to helping shorten the war by at least two years.
Captain Roberts worked at Bletchley Park, Buckinghamshire, until the end of the war, he is now the last survivor of the nine cryptanalysts who worked on Tunny.
He has spent the last four years campaigning for acknowledgement of his colleagues.
More top news
Urban Outfitters has apologised for a 'red-stained' sweater bearing the logo of a US university where four students were shot dead in 1970.
Edinburgh's poet laureate has offered some words of reconciliation as Scotland prepares to vote on independence in just two days' time.
Temperatures will be on the rise in the next few days, with highs of 25C in the sunshine by Thursday, but do not expect clear blue skies.