Booker is to offer regular customers a 10% loyalty payback on additional purchases from its own brand range in the first of its Christmas promotions. Customers' spend over the 12 weeks up to July 6 has been logged to provide data needed for the Double and Save' promotion. Now for the 12 weeks from August 4 to October 26 they are being asked to double their spend to qualify for a 10% payback on extra own brand purchases. The own brands included in the promotion are Happy Shopper, Malt House, Vinters and Tuckshop, excluding tobacco and spirit lines. {{NEWS }}