No REAL evidence of anything that was believable.
I beg to differ.
In the absence of tests that are not circumnavigable, witness testimony is the only real evidence, and there was plenty of that.
Personally, I'm quite pleased that a British TV programme is willing to try to expose a potentially cheating British athlete (make no mistake, that programme was really about a British athlete) rather than the puff-piece eulogies that are the norm.