After the Second World War Allingham continued to work for Ford until he retired in 1961. After Denis Goodwin of the First World War Veterans' Association tracked him down in 2001, Allingham took a prominent role in telling his story so that later generations would not forget. On 16 October 2003, he helped launch the 2003 Royal British Legion Poppy Appeal with model Nell McAndrew aboard the cruiser . He was quoted as saying "veterans have given all they have got for the country ... I owe them ... we all owe them."