Hello! I”m a letting agent who specialise in these circumstances and the critical factor is don’t go in too heavy. I act as a mediator and often find something usually trivial causes the problem and the worst thing to do is wade in with solicitors letters and threaten eviction. When this happens they simply go out their way to delay the process and don’t pay anything.
The laws are far too in the favour of the tenant and you have to tread very carefully. Inbox me if you would like some further advice, email in profile
Edit: just seen your reply, if it’s commercial then no rent = easy eviction!