I can't help with where it is now but it's a lovely photograph.
It looks professional and what struck me was just how clean everything is. Was this
taken right at the start of the trial while all the competitors were still running?
The 'bike has acquired a later alloy top yoke so wasn't new at the time of the photo.
Another thing that interests me is the registration is a Birmingham one.
Hopefully there may be some history appear.