This year's Boxing Day sales are set to see a return of shoppers to the high street . Barclays Consumer Spend research says today stores and shopping centres will see a boost as a quarter of Britons are planning to spend most of their sales budget in-store, up 11% year-on-year. The firm said this trend indicates a growing appreciation for physical retail experiences, with 29% of those who intend to spend more in-store motivated by human interaction. Barclays said the average shopper will spend £