Triple H mentioned on Twitter that NXT Takeover: London is already sold-out. He also revealed the logo for the event:
On 12/16 @WWENXT takes over @WWENetwork and #NXTLondon to a sold-out crowd! @SSEArena #GetReady pic.twitter.com/xEUk4kNmEY
— Triple H (@TripleH) September 17, 2015
This event will live on the WWE Network from London on December 16.