The dance trio play a free party at a secret location on November 15 in partnership with Hitachi's G-Technology.
"We're excited to be putting on a free gig for our London fans whilst giving everyone else the chance to tune in via a global video stream," Above & Beyond said.
"We've picked an interesting venue, which should make the experience all the more unique and memorable."
The first hour of the set will be available as a live video stream under the 'Tight Space' banner for fans who 'Like' the G Technology Europe Facebook page.
Tickets for the show can be won via the group's own official Facebook page.
Above & Beyond came fifth in this year's Top 100 DJs Poll, with only David Guetta, Armin Van Buuren, Tiesto and Deadmau5 finishing above them.
Watch a trailer for the Above & Beyond live web broadcast below: