David Cameron has clashed with Buckingham Palace after the PM tried to delay the Queen’s Speech to the eve of her State visit to France.

The Queen will outline the Government’s planned new laws in her flagship speech to Parliament on Tuesday June 3 – -almost a month later than planned after ministers struggled to come up with fresh ideas.

But the Sunday Mirror can reveal here how Downing Street sparked consternation at the Palace with an initial plan to stage the Queen’s Speech a day later on June 4.

The PM and the Queen around the Cabinet table

With the Queen’s long-planned State visit to Normandy to mark the 70th anniversary of D-Day starting less than a day later on June 5, courtiers feared the diary clash would have put too much pressure on the monarch.

The Queen will be 88 and Prince Philip almost 93 by the time they make the three-day trip to commemorate the Normandy landings.

A Westminster source told the Sunday Mirror: “After pencilling in the Queen’s Speech for May, the Government tried to get the Palace to agree June 4 as the new date for the Queen’s Speech.

“But there was a frosty response from royal aides who feared the Queen would not have enough time to rest before her visit to France.”

It was eventually agreed to move the Queen’s Speech to June 3. But the date is far from ideal as she will be hosting one of her traditional garden parties that afternoon. “It will be an extremely gruelling day for her due to the inepitutude of the Government,” added the Westminster source.

Critics accused Mr Cameron and his ministers of dithering over the Queen’s Speech because the “zombie” coalition between the Tories and Lib Dems had run out of policies on which they could agree.

Labour MP Thomas Docherty: “This is a Government so incompetent that it can’t even organise a State event without creating a fall-out with the Queen.”

Buckingham Palace said the date of June 3 had been agreed after a “constructive dialogue” with the Government.