If anyone were ever to doubt the importance of Halo still to Microsoft today's launch activities should serve as a stiff reminder. After 67 million copies sold to date, Halo 5: Guardians is upon us and the Xbox team has certainly welcomed it in some style.

Ahead of the big event in New York City, over in London things got underway a few hours earlier at the city's iconic Roundhouse in Camden. We had Master Chief, Spartan Locke, competitive gaming and more during the event that was also streamed live on YouTube Gaming.

If you missed that or just can't get enough, we've got a selection of snaps from London in the galleries below!

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