Keith Jarrett, Gary Peacock, and Jack DeJohnette will play at the Royal Festival Hall in London on July 27, 2011. Here's the announcement by Serious:

Keith Jarrett returns for his first London concert since 2009 with the group that sets the standard for the jazz piano trio of today. A rare and not-to-be-missed occasion. Tickets go on sale on Thursday 28 April. Save the date.

Thanks to Harry for the information!