Adeyfield was the first planned neighbourhood to be built in the postwar new town expansion of Hemel Hempstead, in the English county of Hertfordshire. The keys to the first houses to be occupied, in Homefield Road, were handed over to their tenants in February 1950. The Queens Square shopping parade was visited by Queen Elizabeth II on 20 July 1952, to lay the first foundation slab of St. Barnabas Church.