The crew stole personal details from the Civil Service Sports Council (CSSC), to make fraudulent claims over a four-year period.

Membership lists, which were stolen and used to place orders for tax credit starter packs in fraudulent claims over this period.

The gang managed to get away with nearly £2,500,000 before staff at Her Majesty’s Revenue and Customs spotted the ‘extraordinarily high rate’ of claims being made by civil servants.

If the scam had not been stopped it could have reaped more than £10,260,525.

CSSC events manager Adedamola Oyebode, 30, stole membership lists and passed them on to her brothers-in-law Oluwatobe Emmanuel Odeyemi, 34, and Oluwagbenga Stephen Odeyemi, 39, who ran the fraud with Kayode Sanni, 38.

Sanni, an illegal immigrant, denied being involved in the fraud and told Old Bailey jurors ‘my conscience is clear’ as he stood trial alone.

Emmanuel Odeyemi and Adedamole Oyebode have already pleaded guilty and will be sentenced with Sanni at the Old Bailey on July 6.