Owen Paterson, the Environment Secretary, is to call for traditional Scottish haggis to be let back into America, opening up a market worth millions to producers.

Sheep lung, a key part of Haggis, has been banned in America since 1971 and British lamb has been banned since 1989 following the foot and mouth outbreak.

Mr Paterson will lobby senior aides to the President to end the ban, in what could be a lucrative deal for Scottish producers due to the popularity of the country’s heritage in America.

He was asked to take action by Scottish producers at the Royal Highland Show in Edinburgh last week and will meet Tom Vilsack on Monday to call for an end to the ban.

He said: "I share many haggis producers' disappointment that American diners are currently unable to enjoy the taste of Scotland's wonderful national dish in their own country.

"I am meeting my US counterpart to discuss how we can begin exporting it, particularly as so many Americans enjoy celebrating their Scottish heritage.”

The Government hopes the ban on British lamb could be lifted as part of a trade deal between the US and Europe, which could be worth more than £10 billion to the British economy.

Alistair Carmichael, the Scottish Secretary, said Americans “don’t know what they’re missing” and it was time to put an end to the ban.

He said: "In my own constituency, we produce some of the finest lamb in the country, if not the world, so I know just how good Scottish meat can be.

"It seems only right that the UK Government continues to use its considerable influence to open up as many opportunities as possible, to reintroduce our produce where markets have been closed and to create new ones wherever it can.”