'Money mules' or 'money transfer agents' launder funds obtained as a result of fraud. They are ordinary people recruited by criminals to help transfer stolen money. Many of the criminals carrying out this type of fraud are located abroad, so a money mule based in the UK is required to send the money overseas. Criminals try to dupe innocent victims into laundering money on their behalf. They normally do this by pretending to offer legitimate jobs via newspapers or the internet, and often target vulnerable groups such as migrant workers or university students who may be tempted by the lure of a seemingly easy way to make extra cash.
Remember that even if you have nothing to do with the actual extraction of funds from another person's account, by allowing your account to be used to receive and transfer such funds, you will be acting illegally.
Ignorance is no excuse - allowing your bank account to be used for fraud can lead to up to 10 years’ imprisonment!