ITV News has uncovered new evidence that ticket resale site Viagogo may be breaking the law.
Viagogo was ordered back in November, by the courts, to change the way it runs its website to protect people trying to buy concert tickets.
But our exclusive investigation reveals there are still serious questions over whether Viagogo is complying.
Fans of the rapper Drake will know that tickets to his gigs sell out fast. But this morning seats for his next London shows were for sale on the site before they'd even been released.
Viagogo is subject to a court order forcing the company to change the way it runs its site.
They're not allowed to list tickets before they are publicly available. You've got a situation where the resale site is offering tickets before they go on sale. It's a clear breach of the court order but it's also nonsensical in that the tickets haven't gone on sale yet and yet they are listing 175 tickets.
And he says those listings are missing vital details.
What they should be providing at this stage is the contact details for that seller. They also need to tell you where that ticket is - down to the seat number. They're just saying 'upper tier'. For a lot of these it's a mystery where the tickets are - how these people got tickets or even if those tickets exist.
Despite our findings which ITV News showed Viagogo insists it's not breaking the law.
Further to the agreement we reached with the Competition and Markets Authority (CMA) we are now compliant. All tickets on Viagogo are valid.
But consumer expert Jasmine Birtles disagrees.
It doesn't appear to me that Viagogo is actually complying. If they're putting these tickets on a few minutes - just a few minutes - before they're actually on sale via The O2, well clearly they are selling tickets they do not have. And if they're not putting the actual seat number there then how is anybody going to know that that's a genuine ticket?
The Competition and Markets Authority says it is investigating. Campaigners say they are yet to be convinced.