No doubt they will try but there is no business. So unless there is some sort of personal guarantee, why would he (rather than the business) have to pay it back?
I know someone who had a business that had gone belly up before COVID but applied to his bank for a BBL and got £30k. If they had checked the business account properly they would have seen it wasn't trading.
Because I suspect it was a fraud, I notified the bank. What did they do? Nothing.