The pair meet this April to fight for the vacant WBA Super and IBO heavyweight titles
Anthony Joshua and Wladimir Klitschko will fight in front of the biggest post-war boxing crowd when the pair come face-to-face at Wembley Stadium on April 29.
A deal has been agreed which will permit 90,000 boxing fans to attend the event which will see IBF heavyweight champion Joshua defend his crown and attempt to win the vacant WBA Super and IBO heavyweight titles.
Crowds are usually capped at 80,000 for transport network capacity reasons, however London Mayor Sadiq Khan has helped to push through a deal which will see more services available for those hoping to attend the fight.
"I can’t wait to see the fight of the year here in London and it’s fantastic that a post-war record crowd will get to watch it at a world-class venue like Wembley," he said.
"I’m delighted Transport for London and Network Rail have pulled out all the stops to make this happen so we can move 90,000 people around the capital quickly and safely.
"Like me, they have recognised the importance to the capital of staging this epic showdown of the best two fighters in the heavyweight division and I look forward to our great city staging more great fights in the future."
Anthony Joshua and Wladimir Klitschko during the press conference at Wembley Stadium, London last December. Eddie Hearn has dubbed the bout the "biggest fight in British boxing history". Image: John Walton PA Wire/PA Images
Since turning professional in 2013, the Olympic gold medallist has racked up 18 wins, all of which have come by knockout and none of his fights have gone past the seventh round.
Klitschko who has been professional for more than 20 years, has 64 wins - 53 by knockout - and four defeats. His latest defeat came to a different Briton, Tyson Fury, who dethroned him as unified world heavyweight champion.
Two rematches that were set to go ahead have been slated and now he will attempt to win back some of the belts he held for more than a decade.
For Joshua, this will undoubtedly be the biggest test of his career and the most credible opponent he has faced.