Barron and Crowther
1946 Acquired by Eastleigh Engineering Co which adopted this company's name
1968 Acquired by Thomas W. Ward which was complementary to Marshall Richards Machine Co, makers of wire-drawing machinery, already part of the group[1]
1970 Presumably part of Marshall Richards Barcro of Eastleigh, maker of wire drawing machinery[2]
1972 Marshall Richards Barcro of Crook and Eastleigh[3]