I told the police they were not allowed back to the property?

I recently rented my property to my partners husband and children. My daughter passed away last year and we let the property over a 10 year period to them.

The relationship has broken down between us and he has not paid rent for 4 months. Although he did start to pay. He had been asking for a section 21 so he could get a council house. We were reluctant but after missing a payment in April we went to a solicitor and formally served him with a section 21.

He went berserk in the house saying he had a mental breakdown because of all the stress he was under since my daughters diagnosis in May 2017. He caused damage in the property and we called the police and had him charged with criminal damage.

We told the arresting officer he was not allowed back to the property and they took his keys off him and returned them to us. He was also given bail conditions stating not to return to the property by the police after us stating he could not return. This was in the middle of the coronavirus pandemic. He and my grandkids had to stay away.

He is now threatening us with a unlawful eviction civil court case as we had him charged and is in court to recoup the damages that needed repairing.

How would we stand on this do you think we have a case to answer.

Steven