Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,257 pages of information and 244,499 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.
Precision engineers, maker of truck and tractor components
1960 Spark Holdings acquired T. R. Creffield and Son[1]
1962 Spark Holdings acquired Blackstock Engineering Co of Enfield, doubling the precision engineering interests[2]
1965 Spark moved its factory from Enfield[3]
By 1973 the 2 companies were associated as Creffield/Blackstock, precision engineers, part of Heenan Spark[4]
1975 Acquired by Weyburn Engineering Co[5]
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