ATP is announcing the next round of Jabberwocky bands tomorrow at 3pm.

At 9am a series of clues will be placed on the ATP Instagram. To win, simply identify the locations around London in the photos before 3pm and go there. Each location will have one of the new lineup additions somewhere on the site. Be the first to announce that band on the lineup by instagramming a picture of the band name to your Instagram/Facebook/Twitter followers tagging @atpfestival and #jabberwocky.

All entries must be in by 3pm. At 3pm ATP will announce the additions to the bill and comment "WINNER" on each of the winners pictures, confirming the band is playing the event and meaning you have won two weekend passes to the event.

Only one prize awarded per person, so if you know where more than one location is, send a friend to the other one! ATPs decision is final and no correspondence will be entered into by ATP in relation to that decision.

For a chance to win tickets, follow @atpfestival instagram today!