 As a tribute to his contributions, the Scout Association has created a Sir Harold Gillett Memorial Fund to help pay the expenses of special needs Scouts and members in need to visit London and stay at the Baden-Powell House hostel.He was a member of the Council of the Corporation of Foreign Bondholders, from 1965 until his death in 1976

Gillett was created a baronet, of Bassishaw Ward in the City of London, on 4 December 1959.He died in September 1976, aged 85, and was succeeded in the baronetcy by his son Robin.