The pop star Dua Lipa and the actor Callum Turner on Sunday became the latest Londoners to wed at one of Britain’s busiest wedding venues: the Old Marylebone Town Hall, an elegant neoclassical municipal building on a busy road near Baker Street in central London.

Their chosen venue, which doubles as a local government office, attracts people from across the spectrum of this city of nine million; grieving families signing death registrations, immigrants attending naturalization ceremonies and, yes, celebrities tying the knot.

Sylvester Stallone, Liam Gallagher, Lena Dunham and Jude Law all wed there, according to the venue, as well as two Beatles: Paul McCartney and Ringo Starr.

(Mr. McCartney and Mr. Gallagher were apparently so impressed that they chose to get married there twice.)

But you don’t need to have 87.5 million Instagram followers, as Ms. Lipa does, to secure a slot with a registrar there. The Grammy Award winning singer and her husband shared the venue with 11 other couples on Sunday, city officials confirmed.

“It’s no less than a seven-star hotel. We deliver to every person and we make sure everyone is treated the same way,” Dil Syed, who has been head usher at the venue for eight years, said on Monday.

When it is not hosting V.I.P. nuptials, the building also serves as Britain’s busiest town hall wedding venue, according to the best estimates of Westminster Council, the local municipality that manages it.

More than 130,000 couples have been married here since 1924. At least 100 of them were married on a single day in October 2024, when the city celebrated the building’s centenary with a mass wedding ceremony.

During high wedding season, registrars can shuttle as many as 26 couples in and out in a single day, with weddings happening roughly every 15 minutes.

“It’s amazing. It’s electric. And it requires a lot of good communication,” Mr. Syed said.

Even on Monday morning, newlyweds emerged onto the front steps at a decent clip, every 20 minutes or so, as well-wishers tossed confetti at them and bus drivers honked in celebration from an adjacent, traffic-heavy from the busy Marylebone Road out front.

“Out of all the town halls in London, this is probably one of the most iconic,” said one groom, James Matthews, 39. “Classic marble, traditional British architecture. It’s absolutely stunning inside.”

Did he and his new husband, Sebastien von Gossler, 48, care that Dua Lipa and Callum Turner had wed here the previous day?

“Absolutely, we love Dua Lipa” Mr. Matthews said, just as Mr. von Gossler responded with a flat “No we didn’t.”

“We’re very pleased that she could share that moment with us,” he added, laughing.

There was a buzz among other newlyweds outside who were excited to find themselves basking in the afterglow of an A-list wedding , though there was some polite indignation over fielding questions from a reporter about a wedding other than the one being celebrated.

“We asked the registrar for information about Dua Lipa’s wedding but they wouldn’t tell us,” said Michael Yang, 37, another groom.

Khalifa Jones, 28, maid of honor at a different wedding, jokingly disputed that there had even been a celebrity wedding there over the weekend. “You’re wrong. Yesterday wasn’t the celebrity wedding,” Ms. Jones said, pointing to her friend’s wedding party. “This is the celebrity wedding.”

Janan Neirami, a 29-year-old finance worker who married Torben Geisler, 39, at the venue, said she was pleasantly surprised to see that Ms. Lipa had wed at the same venue on Sunday in a similar outfit to hers: a white skirt suit.

“This is my mom’s outfit from 30 years ago, and she did the skirt-suit first!” Ms. Neirami said. “I mean I’m flattered. It means I have good style.”