The Great Ticket Scandal, which aired last night, appeared to show Viagogo employees confirming that leading promoters cordoned off thousands of tickets to shows by acts such as Take That, Rihanna and Coldplay - for the purpose of selling at extortionate prices through 'fan to fan' sites.

Dispatches journalists went under-cover at Viagogo and Seatwave to obtain filmed evidence.

The programme claimed that Viagogo also directly competes with real fans to buy tickets from primary sellers like Ticketmaster when they ...