Quantum, a London-based affiliate marketing company that connects consumers with brands across iGaming and finance, acquired the Cashback.co.uk and JoinCustard.co.uk rewards brands plus the Custard mobile app from performance marketing firm Submission Technology for an undisclosed amount. The deal marks Quantum’s first move beyond affiliate marketing into direct-to-consumer cashback and rewards, a pivot toward owned products that the company plans to scale through its proprietary Qi technology platform. Cashback.co.uk is an established UK rewards platform, while JoinCustard.co.uk launched in October 2024 as a gamified site where users earn by completing surveys, playing games, and shopping online. Submission Technology, incorporated in 2002 in Maidstone, says it launched the UK’s first cashback website in 2003.






