Clarke Anthony Osborne on Companies House:
https://find-and-update.company-information.service.gov.uk/officers/CLm3d3BJFRD4vSOad0zh_5hh1kY/appointments
Has James Sargent still got any equipment after he announced he was retiring some time back? I know he sold some of his stuff to Jake Turner, the New Zealander.
If your "head" isn't on the job in hand, then stepping away from speedway is a sensible thing to do, IMO. Last thing you want is to be "elsewhere" in your head when on a speedway track with 3 others doing speeds of up to 60mph.
Did Berwick try to get an opponent to race against in a challenge? Maybe they did, but couldn't get anybody to agree to the fixtures?? I don't know. I'm just playing "Devil's Advocate".