Hampson's brother Jimmy was also a footballer. Hampson became the first Sheffield United footballer to enlist in 1939 at the outbreak of the Second World War and was evacuated from Dunkirk in 1940. Serving as a corporal in the Royal Armoured Corps, he died of septicaemia in a "north-western military hospital" on 24 June 1942 and was buried in Peel (St Paul) Churchyard.