Coldplay Recruits Jay-Z for UK Tour

Isn’t it nice to help out a friend?

That’s what Jay-Z, 38, is probably thinking at the moment, given new reports that he will serve as special guest for 31-yera-old pal Chris Martin’s band Coldplay, when they embark on a three-engagement sweep of the United Kingdom next year.

MTV UK reports that Jay, enjoying a quiet married life, will join the Viva La Vida men onstage in September of 2009 at three major venues: London’s Wembley Stadium, Manchester’s Lancashire Country Cricket Club and Glasgow’s Hampden Park.

Jay, real name Shawn Carter, and Martin have long been associated, as have their wives  Beyoncé Knowles, 27, and Gwyneth Paltrow, 36.

Jay-Z and the Brit band most recently collaborated on a track called “Lost,” which they played live in Mexico in 2007.

The rapper is well acquainted by now with the across-the-pond market. He made history in June by becoming the first hip-hop act to open the decidedly crunchy Glastonbury Music Festival.