When Buzz, Woody and Jessie return to our screens on Friday with the release of Toy Story 4, it’s not just cinemas that will be hoping for queues at their doors. Retailers also hope the sequel will get their tills ringing too. Why? Nine years ago, when Toy Story 3 was released, sales of toys, T-shirts and other merchandise in the UK were greater than takings at the box office. The Buzz...