Paul McCartney married his girlfriend of four years, Nancy Shevell, singing her a ballad and telling assembled friends and celebs, “I feel great.” The wedding was held on what would have been John Lennon's 71st birthday.

McCartney, 69, and Shevell, 51, married at a London register office, in front of 30 select guests, then moved to a bigger party in the grounds of Macca’s £5 million mansion.

The day got off to a casual start for the ex-Beatle and his heiress wife. Showing a disregard for superstition, the pair spent the morning together, going to the gym then holding a barbeque.

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Paul McCartney and Nancy Shevell are covered in confetti as they emerge from the register office
Paul McCartney and Nancy Shevell are covered in rose petals as they emerge from the register office

The couple arrived in a limo at the Marylebone register office – where McCartney married his first wife, Linda – to make their vows at 3.30pm.

No pictures of the official ceremony are available after guests were handed a note asking them not to share photos on social networking sites.

Paul McCartney's new wife, Nancy Shevell
Shevell exuded toned-down chic, opting for a simple silk dress

Those present for the banns included Macca’s daughter Stella, 40, and Beatrice, 7, Beatles drummer Ringo Starr and his wife Barbara Bach and George Harrison's widow Olivia.

US broadcaster Barbara Walters, who is Shevall’s second cousin, described the wedding ceremony as "beautiful and wonderful".

Beatles fans witing for the married couple
Beatles fans waited to catch a glimpse of the married couple, taking the opportunity to show their tattoos to the gathered media

As the couple emerged onto the street, crowds of fans gathered to wish them well, throw confetti, high-five McCartney and ask him how he felt.

“Terrific, thank you — I feel married," he told them, before climbing into a limo with Shevall.

The pair were whisked to the reception in a limo

A reception held at McCartney’s St John’s Wood house in North London was attended by a host of celebrities including Kate Moss, Jamie Hines, Pink Floyd guitarist David Gilmour, Rolling Stone Ronnie Wood, Jeff Beck, Jools Holland, Tracey Emin Twiggy and David Frost.

£10,000 of roses and white hydrangeas lined the entrance to a marquee in which hung Macca’s art collection, including some Picassos.

Flowers arrive the day before the reception
Flowers arrive at McCartney's north London home, the day before the reception

Guests ate vegetarian nibbles and drank Dumangin Grande Reserve champagne. The party was markedly low-key compared to the lavish reception when McCartney married second wife Heather Mills.

McCartney paid tribute to former Beatles bandmate John Lennon, shot and killed in New York in 1980.

Ringo star at Paul McCartney's wedding to Nancy Shevall
Ringo Starr and his Bond girl wife Barbara Bach

Yesterday was chosen as a wedding date because it would have been Lennon’s 71st birthday.

At the reception, DJ Mark Ronson, who is a close friend of Lennon's son Sean, played records for the guests after McCartney sang a song written especially for Shevell.

The groom also serenaded his new wife with classic Let It Be, which he first wooed her with during a holiday together in Morocco three years ago.