ALL scheduled sports and music events at the new Wembley Stadium have been cancelled and there is now no official opening date for the £797m stadium.

The Football Association today said the construction of the stadium was still "significantly behind schedule" and all planned football matches, including Euro 2008 qualifiers and the Community Shield, would have to be moved.

June concerts by rock and pop stars Bon Jovi and Take That have been moved to the Milton Keynes Bowl, while the Rolling Stones will now play at Twickenham and Robbie Williams will also be looking for a new venue.

Multiplex said it anticipated "substantial completion by the end of June", with outstanding works, such as cleaning, up until the end of September. A further two months would then be needed to run test events to ensure operational safety standards are met.

Wembley National Stadium Limited said it would not announce a new opening date until it had "100% certainty from Multiplex".

Wembley Stadium Chief Executive, Michael Cunnah, said: "We share everyone's disappointment at Multiplex's announcement today of a further delay in the completion of the stadium.

"Their revised construction schedule leaves us with no other choice but to make this decision."

The Guardian newspaper reported the delays could cost the FA £32m.

A FA statement said: "Further to recent meetings with Multiplex and Wembley National Stadium Limited (WNSL), it is clear that the construction of Wembley Stadium is significantly behind schedule.

"Multiplex has now supplied WNSL and The FA with an updated schedule. From the new schedule it is apparent that Wembley will not be available to host our autumn fixtures.

"We do not want to set deadlines on when the stadium will open and be faced with the constant speculation surrounding this as we approach individual fixtures. Therefore, we believe it is important that we are transparent with our plans."

The original hand-over date was to be the autumn of 2005, then it was extended to January 31 2006 and then until March 31.

Now England's two Euro 2008 qualification matches against Andorra and Macedonia in the autumn and the FA Community Shield on August 13 will not be played at the new stadium.

The Rugby Football League will also announce that the Challenge Cup final on August 26 will be switched from Wembley to Twickenham.

Richard Lewis, Executive Chairman of the RFL, said: "Naturally, it is disappointing not to be playing this prestigious game at the new stadium."

Multiplex said in a statement today they were entitled to a September deadline extension.

According to The Guardian, Multiplex's demand for another deadline extension is because of design changes imposed by WNSL, a wholly owned subsidiary of the FA.

"Multiplex has formally advised its client that Multiplex is entitled to substantial and legitimate extensions of time under the terms of its construction contract which will extend the contract completion date until at least September 2006," the statement to the Australian Stock Exchange said.

"Not withstanding that it is Multiplex's belief that it has until at least September to complete, Multiplex is targeting substantial completion by end of June as noted above."

The FA Cup Final has already been moved from the beleaguered stadium to Cardiff's Millennium Stadium, while two England World Cup warm up matches were moved to Old Trafford.

The stadium has been plagued by industrial disputes, construction gremlins and drug allegations since plans were first unveiled in 1999. More recently disputes with workers over pay, the collapse of a massive roof rafter have hit the project.

The stadium has already cost Multiplex £106 million and it had been reported that the FA will demand compensation for the new delays.