An “urgent review” of dynamic pricing has been launched to ensure consumers are being treated fairly, the competition regulator has announced amid the backlash over ticket prices for the Oasis reunion tour.

The Competition and Markets Authority (CMA) spoke up after a stream of complaints relating to the cost of tickets for the eagerly anticipated Oasis shows, which more than doubled while on sale.

Tickets worth £148 were being sold for £355 on Ticketmaster within hours of…