Isn't he the one who was in bother a while ago along with Jonathan Ross about Andrew Sach's daughter?
If by a while, you mean 10 years ago, then yes. Although I listened to that Radio2 broadcast when it aired and Jonathan Ross was at least as culpable for what transpired, likewise the production team and management team as was prerecorded so could easily have been edited or rerecorded.
Anyhoo, back to the allegations, he has always publicly been portrayed as a bit of a Casanova, so there's that, and it's surely no coincidence that in the run up to the US election and Russell's podcasts regarding various nefarious goings on in the world have attracted a significant number of views so it would be rather convenient for him to be disreputed by a seedy allegation.
Expect more of the same in that not too distant future.