As many of you will know - and will have seen, either in the flesh or via the live worldwide stream (which is also available below to watch on demand) - to tie in with the release of the rather incredible Pink Floyd - The Early Years 1965-1972, which came out today, Nick Mason was in London on Wednesday night.

At YouTube Space London, a select bunch of lucky ticket winners joined the likes of the band's management and record company representatives for the launch event, which consisted of an unboxing, rare audio and video clips, and Q&As with Andy Jackson and Nick Mason, in the snug basement studio. The inside of the building featured massive reproductions of the box set/2CD set artwork, as well as multiple video screens showing all manner of Floyd footage, from different eras. All nicely done.

Hosted by BBC Radio 6 presenter Matt Everitt, the audience (local and global) were treated to a number of insights from Andy Jackson, responsible for the audio wizardry in the box set, before Nick Mason joined Matt on stage for his Q&A. Nick was at his typical witty best, and you can enjoy his answers in the following video of the night: