Possibly not, BM, because Gamble Jarvis Plant Limited was, from its founding in 1971 through to 1986, previously known as T N S Plant Group Limited.
M J Church (Plant) Ltd was registered with Companies House in 1984. Perhaps that company simply bought out the assets of Gamble's? It seems that the old firm was never registered as 'Gamble Ltd', 'Gamble (Plant) Ltd' or anything similar because, although such names have been registered at Companies House, the dates and trading activities don't see to fit.
Perhaps you might have more luck searching though, Bramleyboy:
http://wck2.companieshouse.gov.uk//wcframe?name=accessCompanyInfo