The brand delivered a set of headphones sporting Union Flag colours to British athletes including tennis player Laura Robson and footballer Jack Butland yesterday (30 July).

Butland took to Twitter to thank the brand for sending him the headhones, posting: “Loving my new GB Beats by Dre #TeamGB #Beats.”

He went on to tell fellow Team GB footballer Karen Carney that a Beats rep had visited the team’s hotel and was “sure they’ll bump into you guys soon.”

The tweets were posted despite Locog giving athletes a detailed social media and blogging policy to ensure they don’t fall foul of branding regulations.

The stunt happened just hours afer Olympians launched an online protest against Rule 40, an International Olympic Committee (IOC) policy that bans athletes from promoting their individual sponsors during an Olympic tournament.

The level of protection for Olympic sponsors from ambush stunts at London 2012 has been a major talking point of the event so far, with some legal experts saying the laws are too strict. Last week, brands including brewer Brewdog and off-license chain Oddbins launched campaigns criticising the rules.

The IOC were unavailable to provide comment at the time this article was published.