The Methodist minister, 63, was filmed allegedly buying and using illegal drugs including crystal meth, crack cocaine and ketamine. Since the claims it has emerged that he left the bank, where he presided over the near collapse, after concerns over his expenses. The Manchester-based mutual, which has been shaken by allegations surrounding Mr Flowers, has written to former bank chairman to demand he repay £31,000 and stop a further £124,000 of payments due At the same time the mutual's bank is conducting a forensic examination of the actions of its directors and senior managers in the run-up to the discovery of its £1.5bn capital shortfall in June. The findings from that probe will be passed to the Financial Conduct Authority, which is examining whether it can bring any enforcement actions against past directors. A review of Mr Flowers' past expenses claims has also begun, amid concerns he may have used some of the mutual's money for his own private affairs.