The musical hit Book of Mormon breaks records in London when it opened Thursday night at the city’s West End. It swiftly made history by garnering the highest single day of sales Friday, in both West End and Broadway, grossing 2,107,972 pounds ($3,120,441).

The figure of its single-day sales gross in the West End is more than double the day-after sales from the show’s 2011 Broadway opening. The 2011 figure was $1,519,201.

Producer Scott Rudin exclaims that, “It’s an unbelievable result,” in a phone interview Friday night. “To be literally twice what we did the day after opening in New York is just unheard of.”

The show had four weeks of previews in the West End. After Thursday night’s opening, 150,000 additional tickets have been made available. The booking period has also been extended to Jan. 11, 2014.

It’s the very first time that producers opened the entire first performance in London at reduced lottery prices. Tickets were sold out in the first 10 minutes, according to Rudin. The Book of Mormon in London is produced by Rudin, Anne Garefino, Importan Musicals and Sonia Friedman Productions.

Book of Mormon is a Tony Award-winning musical about a pair of missionaries assigned to spread the word in a remote village in Uganda. Although it does spotlight the Mormon religion, it pokes irreverent fun at the faith as well as other things like female circumcison and superstitions about the spread of AIDS. The creators of the hit and edgy cartoon series, South Park, Matt Stone and Trey Parker wrote the book, music and lyrics for the musical. Casey Nicholaw is choreographer; both Nicholaw and Parker are directors.

To date, the show’s estimated revenue is at between $200 million to $250 million, according to Rudin’s calculations. It is currently playing in New York, Chicago and on a national tour. “It has never had an unsold seat in any building in which it’s played,” says Rudin.

Despite the success of the Book of Mormon in the U.S., Rudin found difficulty in determining how it would be received in London. “A lot of American musicals haven’t succeeded in London that were big hits and really well loved here,” he said. “You never know what fate is going to befall your show.”

Rudin shares that the shows irreverent humor actually has British roots. Some of the basis for the show is from Monty Phyton and English satirist, Chris Morris. Rudin says that Morris has a certain kind of English humor that Stone and Parker, the show’s main writers, enjoys.