Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,258 pages of information and 244,500 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
Trading as Diffusion, supplier of fan coil and commercial heating equipment.
1998 Benson Group plc changed its name to Energy Technique plc[1]
2000 Moved from Oldbury to West Molesey
2015 Non-trading subsidiary: Diffusion Environmental Systems
Then became Diffusion Group which was acquired by Volution
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