Appleby

The professors, who spent a year researching Harvard's document, believe it is from the town of Appleby, Cumbria.

They think the trail from Appleby to Harvard involves the Lowthers, a land-owning family who gave the Magna Carta to Thomas Clarkson, a leading abolitionist of the 1780s.

Consult is one of a planned set of government AI-powered tools that have collectively been dubbed "Humphrey" after the wily senior civil servant, Sir Humphrey Appleby, from the classic 1980s sitcom Yes, Minister.

The 9-2 shot, trained for owners Godolphin by Charlie Appleby, was the pick of jockey William Buick and proved the right choice.

"It was a hard choice for William, but he saw it right. He thought this horse would see out the mile trip and he outstayed them," said Appleby.