The film releases in North America on March 6.
The world premiere of The Second Best Exotic Marigold Hotel was held on February 17, at the Odeon in Leicester Square, London.
The film's cast joined several other British celebrities (and royalty!) to attend the do.
Take a look at the red carpet arrivals:
Indian actress Tena Desae, who reprises her role from the 2012 film The Best Exotic Marigold Hotel, looked stunning in her mirror work-heavy Manish Malhotra lehenga.
Dame Judi Dench, one of the protagonists in the ensemble comedy-drama, wore a striking Abu Jani Sandeep Khosla jacket to the event.
Dame Maggie Smith, who plays Muriel Donnelly in the film, posed for pictures.
British-Indian starlet Sofia Hayat grabbed eyeballs in a very Kim Kardashian-esque, body-hugging number.
Camilla, Duchess of Cornwall and Prince Charles, Prince of Wales, also attend the film's world premiere.
English actress Thandie Newton, dressed in a black and white off-shoulder number, photographed at the do.
Veteran actress Lilette Dubey, who plays Dev Patel's mother in the film, worked her pretty sari on the red carpet.
Cast member Celia Imrie posed for pictures in her Herve Ledger gown.