Identical twins Amelia and Imogen are trying to get into Wimbledon. Playing didn't go very well for our cheeky twins, so it's back to the drawing board. This time they want to give umpiring a go so they head to meet wheelchair tennis champion Gordon Reid, who knows how important the role of the umpire is. But will they impress him with their line calls? And after a visit to the set of Grease and a lesson on projection from The Wanted's Tom Parker, surely they'll pass their final umpiring test - won't they?