There isn't much happier a sight than the giant upside-down cow on South Bank, for it signifies not only that summer is on the way, but also the return of hundreds of incredible shows. Starting off its epic run with a bang, the opening gala will see incredible comedy, cabaret and circus acts. With Mark Dolan as MC, experience the wonders of The Showstoppers, Ellie Taylor, David Mills, Magical Bones, Morgan And West and John Robertson. Over 18s only. Running time: 2 hours.