A customer of Coral's Downing Street betting shop in Farnham, Surrey, stands to win nearly half a million pounds if St Nicholas Abbey wins the Derby.

On 25th November last year, the Coral punter placed a £1,250 pound ante post fivefold on Kauto Star to win the King George VI Chase at 4-5, Binocular to win the Champion Hurdle at 7-2, Big Bucks to win the World Hurdle at 6-4, Special Duty to win the 1,000 Guineas at 5-1 and St Nicholas Abbey at 9-4 to win the Derby.

The bet will return precisely £493,593.75 pounds if the Aidan O'Brien horse wins at Epsom on 5th June.

"What a rollercoaster ride this customer has been on since he placed his bet. At one stage Binocular was out of the Champion Hurdle reckoning yet eventually won the race in style, and then on Sunday Special Duty was beaten in the 1,000 Guineas only to win the race in the Stewards' room", said Simon Clare, Coral Spokesman.

"We now face a massive payout if St Nicholas Abbey wins the Derby and, whilst that now looks less likely after his disappointing performance in the 2,000 Guineas, this customer probably fancies his chances given his luck so far", added Clare.

"We have to say well done so far to this punter who hasn't messed around with fourfolds, trebles or doubles, but has just gone for it with a life-changing straight fivefold", concluded Clare.

Coral are offering new customers a free £20 bet on the 2010 Epsom Derby - sign up with the firm now using bonus code MAXIMUMBONUS.