West Ham United have confirmed that Czech billionaire Daniel Kretinsky has completed his purchase of a 27% stake in the Premier League club.

The businessman and his colleague Pavel Horsky have been appointed to the board at the London Stadium, joining joint-chairman David Sullivan and David Gold, in addition to vice-chairman Karren Brady.

Kretinsky owns top-flight Czech outfit Sparta Prague and revealed his delight at being part of a "very exciting future" with the Hammers.

"I am delighted this detailed process has now been successfully concluded. I am passionate about football. I greatly appreciate and respect the exceptional history and tradition of West Ham United as well as its loyal and passionate supporter base and also the highly inspiring role it plays in many social programmes and initiatives," Kretinsky said in a statement.

"The development and growth of the club in recent years has been clear for everyone to see and I am delighted to be part of what I believe is a very exciting future ahead.

"Having been to the London Stadium recently to watch David Moyes' team, I know it is an incredible time to become part of the West Ham United family. I feel privileged to now have the opportunity to help everyone here build on the proud traditions of this great club."

Meanwhile, Brady added: "On behalf of the board I am very pleased to welcome Daniel Kretinsky, Pavel Horsky and 1890s holdings a.s to West Ham United. We are always looking to continue to progress and Daniel's involvement brings investment which strengthens the club's position, and in turn will assist in the development of the club's key areas of focus.

"David Sullivan and David Gold have always been very open about finding the right investors to join them on the journey as custodians of West Ham United, and Daniel's strong business acumen and football experience will be of huge benefit to the club. We very much look forward to working with him and Pavel."

West Ham are currently third in the Premier League table, three points behind leaders Chelsea, while they are through to the quarter-finals of the EFL Cup and knockout round of the Europa League.