The 'I Want It That Way' group will appear at the intimate Under the Bridge venue in Chelsea this Sunday (June 30).
The special "fan event" will see the group take part in a Q&A with fans as well as performing a short three-song set.
Fans will be treated to a preview of the group's new album In A World Like This as well as watching exclusive footage from their new movie.
A limited number of VIP tickets have been made available to fans, with more expensive passes giving fans the opportunity to meet them backstage.
Tickets are available now, priced at £48 and £149 plus booking fees.
http://www.digitalspy.co.uk/music/news/a493422/backstreet-boys-announce-last-minute-london-gig.html
