Bank customers in the UK could soon see their payments delayed by up to three days as part of a new government crackdown on fraud. The Treasury has proposed new laws that would allow banks to pause suspicious transactions for up to 72 hours if there are reasonable grounds to suspect fraudulent activity. This marks a significant change from the current system, where banks must either process or refuse a payment by the end of the next business day. The move comes as part of efforts to combat the estimated £460million lost to fraud in the last year, which accounts for over a third of all reported…