Could someone recommend a likely supplier for quality (branded) main bearings? I've got the bearing sizes from the technical section; just looking for direction.

email (option): cmmacd@hotmail.co.uk

These guys supply the majority of BSA retailers in the UK if you want to cut out the middle man.

These guys supply the majority of BSA retailers in the UK if you want to cut out the middle man.
https://www.bearing-supplies.co.uk/

We have our own guy Darren on this forum who runs his own bearing company. Who will know exactly what you need.
Email john-fenwick@btconnect.com

Ron

email (option): ronpier@talk21.com

I can definitely recommend Darren, he helped me with a complete set of good quality bearings for my M21 engine. He is a very kind and helpful person.

Regards,
Bastiaan

email (option): wdmotorcycles@gmail.com

Thank you all; that's really helpful.

email (option): cmmacd@hotmail.co.uk