I can say with some conviction that if you wrote to Bristol University I don't believe you would get any response, this has been tried.
I wonder if it is worth trying the commons health select committee (but its chaired by someone who is not sympathetic to ME patients) or the national audit office.
Bristol University has just been found to have failed to publish clinical trial results
https://www.transparimed.org/single...rsity-pledges-clinical-trial-registry-cleanup