Dear Friends, to the best of my understanding this Dale Martin match which was billed for the British Heavyweight title was NOT conducted under the Lord Mount Evans Rules of professional wrestling, hence cannot be considered as title change. By the way after this match Baldwin still had his Lord Mount Evans silver championship belt and yes he still was the reigning British heavyweight champion according to the Lord Mount Evans Rules. Thanks.

In reply to Mark and Ruslan, and anyone else interested .
Yes, Joint Promotions was a bona fide company. The company papers can be purchased from Companies House, and I have them from 1952 until the company was dissolved.
Formed on 6th March, 1952 with a nominal capital of £1,000. Registered offices in Toller Lane, Bradford. Directors were Walter Leonard Beresford, Norman Morrell, George Frederick henry de Relwyskow and Arthur Lawrence wright. Secretary was George Neville Riley.
John George Abbey (Dale) was added as a Director on 20th January, 1953.
The company was struck off the Register of Companies on 27th October, 1992.