Set 218 to win, they were dead and buried on 147-8 until, in almost complete darkness, tailenders Courtney Browne and Ian Bradshaw conjured a stand of 75 runs in 92 balls for the ninth wicket to get West Indies up to their target with seven balls to spare.
The unlikely heroes saw off England's quickest bowlers Andrew Flintoff and Steve Harmison and even declined an offer to go off for bad light with 43 overs gone and the score 183-8.
They took 12 runs off five balls from Alex Wharf to seal the game. "It was a tremendous effort. It is great to see guys believe in themselves - I'm not sure if Bradshaw has even had a net. They are two guys from Barbados who have played together in many matches so I expected them to cope out there," said West Indies skipper Brian Lara.
England captain Michael Vaughan admitted he thought the game was in the bag when Browne and Bradshaw came together. "This is something new for us. We have had an outstanding summer and not lost many games of cricket and in the last few weeks we have been very good in the one-day stuff," said Vaughan.
"When we had them 147 for eight I was confident of winning the game but sometimes you've got to take your hat off to the opposition. They played very sensibly," he added.