Its initial banking partner, one of Europe's largest retail banks, Lloyds Banking Group, is offering targeted deals to its customers as "Halifax Cashback Extras" in conjunction with dozens of retailers signed up for the September launch.

Cardlytics enables retailers to provide marketing offers to Halifax customers in a precisely targeted way, based on their historical purchases. The cash-back offers are presented to customers within online and mobile banking channels. Consumers activate the offers by a single click and earn cashback of between 5-15% on their purchases by using their debit or credit card. There are no vouchers to print or codes to enter. The activation of offers mean that retailers can easily measure the success of their campaigns, which in the US have seen incremental sales growth of up to 30% depending on the category.

In less than four years since launching in the US, Cardlytics now works with approximately 400 banks, including three of the top six, as well as hundreds of the top national retailers, restaurants and service providers together with thousands of regional partners. Cardlytics has insight into the spending of 70% of US households and has driven over $500m in retail spend in Q4 2012.

To join the Cardlytics programme, retailers do not need to install or implement any point of sale changes or staff training processes; everything is managed and measured through the relevant payment data. Cardlytics employs a payment by results model so retailers don't pay until results are achieved.

Retail partners for the UK cover a range of categories from grocery to dining to everyday spend and services including Morrisons, Argos, Homebase, New Look, Pets at Home, Marriott, O2 and dozens of regional retailers.

Commenting on the UK launch, Charlie Humphreys, UK Managing Director of Cardlytics said: "Cardlytics has been a great success in the US. Retailers have been enthused by the insight and precision targetiargeting offered by the model, together with the simplicity of participation. The ability to use an online media to generate measurable in store as well as online sales has been particularly valued, together with the very strong return on investment.

The UK is one of the most advanced retail banking and retail markets so launching our platform here makes absolute sense. We look forward to working with banks, retailers and consumers to extend the benefits of Card-Linked Marketing to all."

Commenting further, Jason Brooks, Head of International for Cardlytics said: "The UK launch represents a dedicated effort and investment by Cardlytics. We are the first to have a large scale, meaningful implementation of Card-Linked Marketing outside the US. This launch is the first step to significant international growth for the company."

Anthony Warrington, Director of Halifax Current Accounts said:
"Everybody's trying to make their money go further. We are launching Cashback Extras to make this easier and more rewarding for Halifax customers."