The Bank Customer was a young man at the branch of Lancashire & Fyle Building Society who in April 2011 attempted to stop Jim McDonald in an armed robbery from getting away with money.
Jim wrestled him to the ground and thumped him. After authorities were alerted, Jim kept the customer amongst many others hostage in the building. He warned the customer not to cross him or else he would "blow his head off".
Eventually Jim let the hostages go, unharmed, after speaking to his ex-wife Liz. They were ushered away by police.