<P> During the summer hiatus of 1997 the producers were contacted by Channel 4, the British first - run broadcaster of Friends, with a proposal to film an episode in London . Producer Greg Malins is quoted as saying "We had to come up with a storyline that would cause all the Friends to go to London (...) and that ended up being Ross getting married, because they would all have to go to his wedding". </P> <P> The episode featured numerous supporting roles from British actors . For her role as Andrea Waltham, Saunders "heard Joan Collins' voice in (her) head". Her Absolutely Fabulous co-star June Whitfield appeared in cameo as the housekeeper . Felicity, the bridesmaid who Joey entices, is played by Olivia Williams . Further cameos were made by Sarah Ferguson as herself, Richard Branson as the vendor who sells Joey a hat, and Hugh Laurie as the man sitting next to Rachel on the plane . Lisa Kudrow did not join the others in London as she was too heavily pregnant to fly, like her character Phoebe . Elliott Gould inadvertently revealed to the public that Rachel was to turn up at the wedding, upsetting Marta Kauffman . </P> <P> Scenes not involving the main apartments were all filmed in London during the week beginning March 30, 1998 . Location shooting was done mostly for scenes featuring Joey and Chandler; outside the London Marriott, Grosvenor Square, and the top of an open - top London bus as it crosses Tower Bridge (this scene was excised from the final cut but features in the opening titles of the next episode). Interiors, such as the restaurant, the Waltham's hallway and the hotel rooms, were all filmed on purpose - built sets at The Fountain Studios, Wembley . The reaction from the audience when Monica came out from under Chandler's bed covers meant the actors had to hold their position for 27 seconds . When filming ran late one evening, the production team ordered pizzas for the audience . </P> <P> The episode was a coup for Channel 4, who erected crush barriers outside their building to hold back fans when the cast arrived for a press conference (though no fans actually turned up). The broadcaster also commissioned a behind - the - scenes program from Princess Productions . Hosted by British television personality Johnny Vaughan, The One Where Johnny Makes Friends features comedic tongue - in - cheek interviews with all six main cast (Vaughan contacted Kudrow by payphone, claiming that he couldn't make international calls from his dressing room) and was broadcast on Channel 4 on May 6, 1998 . </P>

Where was the london episode of friends filmed
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