When was the ICDS (Industrial Civil Defence Service) established?

Organised in parallel with the Civil Defence Corps, the Industrial Civil Defence Service was founded in 1951 to organise civil defence activities at industrial premises particularly larger factories. The Industrial Civil Defence Companies were organised and equipped by individual businesses who did not receive financial istance although they did benefit from tax relief on the costs. In 1966 there were about 106000 volunteers and instructors in the Service.