London - The bet will pay out odds of 100,000/1 to a £10 stake if HM the Queen croaks it 'to the extent they have to cancel the wedding'.
Mug punta Anthony B Lair took out the wager - maybe on a tip-off - after the MI6 code words 'Kate Will Wear Queen Mary Tiara' were splashed all over the red top.
COBRA, the government terror think-tank, decided on the hidden encryption ages ago when reports of a Westmonster Abbey invite snub first reached Cherie's enormous burning ears.
Online spread-yer-legs betting agency Aintgottaprayer.con hinted heavily today that Blair is livid - and determined to get his £££s compensation rake-off.
Despite fathering Friday's bridegroom Blair has been left off the Z-Listers sycophanting their way to the Abbey on Friday.
Bookies are now slashing HM's RIP odds to a bargain basement 25/1.