Lending money is known as Credit and Risk. Customer gets the Credit(loan) Bank takes the Risk. Since the recession the Banks are taking less risk, so people are having to go elsewhere and pay high interest rates for the privilege as they are considered high risk.
That leaves the low risk customers getting low rates at the Banks, as they know they will get their money Bank. Others know they get the high risk customers therefore high interest rates, as they may see less of their money back.
Unfortunately Banks Branches do not rely heavily on who the Manager is, by the time I retired there was really no discretion at all, everything dictated from above and carried our in a proscribed manner. Only ones left in that position were senior corporate account managers.