Colossal Grand National gamble on ‘horse who stunned the world’ keeps building as bookies run for cover

A COLOSSAL Grand National gamble on a horse ‘who stunned the world’ is showing no signs of slowing down.

Worried bookies are running for cover after bargain £800 buy Hewick plummeted to as short as 10-1 having been backed in from 50s.

PAThe booking of jockey Gavin Sheehan, left, has seen Hewick’s price for the Grand National tumble[/caption]

The former King George hero looks sure to get his preferred good ground at Aintree and his trainer Shark Hanlon reckons he could easily go off favourite for the £1million race.