One Grand National punter has scooped just under £1million after I Am Maximus triumphed at Aintree this afternoon. It ranks among the largest ever wagers on a horse in the race, with the lucky punter walking away with a staggering £900,

A substantial £100,000 wager placed on I Am Maximus to win the Randox Grand National was a "real bet" and not a publicity stunt, according to Paul Byrne, owner of Fitzwilliam Sports.

The Mullins-trained 10-year-old became the first since Red Rum in 1977 and only the fifth in history to regain his crown in the Aintree showpiece.