If you were asked what constitutes a sport, would you say computer gaming? Pro gamers can finally start taking heart that their competitions aren't being dismissed out of hand, as London Mayor Sadiq Khan publicly recognises e-sports' contribution to the UK’s digital economy.

Not long ago, it was inconceivable that video games would be anything more than a niche pastime, let alone a path to a lucrative career. Yet e-sports now attract millions of fans and major brand sponsorships. How did they come to rival to traditional sports? And can they achieve mainstream success?

As well as featuring fantastical gadgets and dastardly villains, 2017 movie sequelKingsman: The Golden Circlecelebrates secret agent style. And it’s letting fans replicate the spy look with an official capsule collection launched in collaboration with luxury menswear retailer Mr Porter.

Recent years have seen competitive video gaming gather momentum, and while Twitch continues to grow within the existing community of fans, BT Sports' new agreement with EA Sports is set to bring e-sports to a new audience of traditional sporting enthusiasts.