Christmas Parties at British Thomson-Houston or English Electric?

British Thomson-Houston old factory buildings
Image courtesy of Anne Langley

Can you tell me what year English Electric were involved with British Thomson-Houston? My sister and I remember the huge wonderful Christmas Parties that were held for thousands of children, but while I think they were held by BTH, my sister seems to think that our Father worked for English Electric, and it was them that put on the big children’s parties. Would that have been at Newbold Road, Rugby?