Hunkin's page coincided with our acquisition of this book by the delightfully-named Shifty Burke, Memoirs of a safe-breaker, published by Arthur Baker Ltd in 1966.
He's the chairman of Darlington Football Club and a former safe-breaker - absolutely fascinating.
Arnold agrees to use Buster's services as a safe-breaker provided Buster pays him £500 immediately.
Another useful double agent whom the XX-committee ran was a London safe-breaker called Edward Chapman who had been recruited by the Abwehr while awaiting trial for burglary in the Channel Islands.