Furious palace aides are hunting for the source behind the 'deeply disturbing' leak of top secret plans that are to be enacted when the Queen dies.

The details of 'Operation London Bridge' including ministerial protocols and funeral arrangements were published yesterday morning in a move described by Whitehall insiders as 'concerning, unnecessary and upsetting'.

The plans for the huge operation were only shared with a small group of people and reveals that all Whitehall flags must be lowered to half mast within ten minutes followed by a TV address and UK tour by Prince Charles and a pre-planned memorial service at St Paul's Cathedral for ministers that will be made to look 'spontaneous'.

Their exposure has provoked fury at Buckingham Palace, with sources saying there is now a 'major appetite' to discover who the mole is what their motivation was.

'It is deeply disturbing that such private information, which is not only deeply personal to the Queen but also has widespread