So, we don’t know if he’s really done anything yet? Guilty without trial!
You don't need a trial to be fired or lose a contract with your employer if there are complaints against you that are upheld by HR.
The wording of the press statement from the publisher is very careful in what it says, but when a press statement goes out that says basically "we take the safety of our staff seriously" you can bet that they've got the facts lined up ready for any potential court case, as those statements are not written by a PR guy on his own but there will have been a lawyer sat right next to him reviewing every single word to ensure it can all be backed up by documentation.
The fact that he's made them an awful lot of money means not only has the decision been made in regards to safety, but that they have decided the risk/problem is too much despite how much he might be making them.
To put things in perspective, it looks like at least one of the woman involved got a "five figure payout" from harper collins, and that the company told it's staff to not meet with him one on one, that's a pretty big yikes as it means, if true, that they knew he was a serious problem but were willing to put up with it (not a good thing when the next complaint reaches an employment tribunal/court room) until the new CEO came in.
IIRC it's previously been reported Walliams wasn't allowed to have young women as his assistants/runners in at least a couple of shows he worked on, which is another indicator of what he might be like as typically runners are literally the youngest most inexperienced and vulnerable members of a production (the ones least likely to feel they can speak out as they are usually quite replaceable). To have anyone on the production who can't have half the runners near them is a major headache and indicator of a serious (at least for HR*) repeated problem.
*Note there is a different level of proof etc required for HR to decide someone is a liability for a civil case/harassment, and what is needed for a criminal case.
