"Innocent until proven guilty" very specifically applies to punishment by the courts and government (which would be UK courts in this case). Everyone else can still think he's a sleazebag and want nothing to do with him without knowing exactly which crimes he may have committed.
I could absolutely be fired by my employer for harassing colleagues in a way that wouldn't be outright illegal. Same here for streaming companies, traditional TV production companies, etc not wanting to work with him.