Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 138,035 pages of information and 222,628 images on early companies, their products and the people who designed and built them.
1961 Radiation consolidated its central heating equipment under the Parkray brand, whether working on gas, oil or solid fuel
1967 Radiation was taken over by Tube Investments
1968 Strike at the factory at Belper