'Naked Chef' Jamie Oliver's Menu for G20 World Leaders

Jamie Oliver's Downing Street dinner will feature the best of British food for the G20 leaders. Photograph: David Loftus/PR

Jamie Oliver will be cooking a feast celebrating the best of British food for the G20 leaders this evening, the celebrity chef revealed today.

The politicians and their wives will begin their meal at Downing Street with a starter of organic Scottish salmon served with samphire and sea kale, and a selection of vegetables from Sussex, Surrey and Kent.

For the main course, Oliver has plumped for slow-roasted shoulder of lamb from the Elwy Valley in north Wales, with Jersey Royal potatoes, wild mushrooms and mint sauce.

Dessert will be an old teatime favourite – bakewell tart and custard.

Vegetarians at the meal will be offered a goat's cheese starter followed by lovage and potato dumplings for the main course.

Pork has purposefully been left off the menu to avoid awkward moments with the Muslim guests, such as the Turkish prime minister, Recep Tayyip Erdo?an. Only the contents of the bread basket have a vaguely foreign flavour – Oliver has chosen to serve Irish soda bread.

Oliver said: "I'm very, very proud of my country and its food traditions and I know that the guests at Downing Street will be in for a real treat."

Taking over the Downing Street kitchens with him are eight apprentices and recent graduates from his east London restaurant, Fifteen.

Oliver's wife, Jools, is due to give birth to their third child at any time, but he is still planning to lead his team in the No 10 kitchens tonight – the third time he has cooked there. He will not be able to take his mobile phone inside due to security precautions.

At the dinner for spouses, the US First Lady, Michelle Obama, will be seated between the Harry Potter author JK Rowling and Olympic gold medallist Dame Kelly Holmes.

Model Naomi Campbell will be among celebrity guests from the worlds of fashion, sport, business and the arts.

Rowling is a well known Labour supporter who made a donation of ￡1m to the party last year while Holmes was one of London's ambassadors in the successful bid to host the 2012 Olympics. She won gold medals in 800 metres and 1500 metres in the Athens games in 2004.

Other guests will include Martha Lane Fox, the founder of the website lastminute.com and a trustee of legal action charity Reprieve, Paralympian Dame Tanni Grey-Thompson, film director Gurinder Chadha, whose hits include Bend It Like Beckham, Jasvinder Sanghera, who runs the anti-forced marriage charity Karma Nirvana, Welsh actress Ruth Jones, who appears in TV show Gavin And Stacey, psychologist Tanya Byron and broadcaster Emma Freud.

The spouses will be served the same menu as the G20 leaders, but will dine elsewhere in No 10.

Menu in full

Starter

Organic salmon from Shetland, served with samphire and sea kale, a selection of vegetables from Sussex, Surrey and Kent, and Irish soda bread.

or

Goat's cheese starter (v)

Main course

Slow-roasted shoulder of lamb from the Elwy Valley in north Wales, with Jersey Royal potatoes, wild mushrooms and mint sauce.

or

Lovage and potato dumplings for the main course (v)

Dessert

Bakewell tart and custard.