Does this count as a company loan?

I'm doing the accounts for a small business that gets all of its income in cash. In order to avoid bank charges the owner had been paying cash into his personal account before transferring the money directly into his business account. I am confident that the only reason he was doing this as the bank charges for paying into his business account was expensive for such a low profit business. However, I am wondering whether I should suggest that he stops doing this as HMRC may consider this to be a company loan.

Any advice on this would be greatly appreciated.

Many thanks

David