Connolly's of Blackley, Manchester.
1893 Company founded as Connolly Brothers.
1919 Private company - presumably Connollys (Blackley) Ltd. Resigned from the Cable Makers' Association
1924 Permission granted for women to carry out paper lapping of copper wire[1]
1928 Acquired by other members of the Cable Makers' Association.
1943 Company made public.
1943 Rejoined the Cable Makers' Association[2]
1959 Became a subsidiary of BICC
1960 was part of the Home Group of BICC, manufacturing telephone cable.
1961 Manufacturers of insulated wire and cable.[3]
1975 BICC Connollys was part of BICC Cables Ltd
1975 aerial photos here[4] and here.
1999 Acquired by Corning
2000 Acquired by Belden
2006 Acquired by B3 Cable Solutions
2012 Acquired by BT
2018 Sold to Wilms Group of Germany. Renamed British Cables Co
See British Cables Company website