Like many things during the pandemic, Underbelly has had to adapt. This summer, the city’s favourite giant purple cow has sailed across the city from Southbank’s riverside to its exciting new home in Earl’s Court’s London Wonderground. And Underbelly has really upped its game. This year’s line-up at the fairground boasts the likes of Al Murray and Radio 4’s Lucy Porter, an array of Circus acts (Circus Abyssinia being one…