The competition, launched by London & Partners in collaboration with VisitBritain and the GREAT campaign, gave one person and their guest a chance to experience a two-week all-expenses-paid trip to London.
Nearly 100,000 people registered on VisitLondon’s website and more than 10,000 submitted entries to become London’s Official Guest of Honour.
In January this year, the winner was announced as Adaeze Uyanwah, a teacher and creative writer from California.
During her visit, Uyanwah visited the Science Museum with Professor Stephen Hawking, had afternoon tea at Lord’s Cricket Ground with Jim Carter, who plays the butler in Downton Abbey, and had a meal personally cooked by Michelin-starred chef Jason Atherton.
The campaign has received global coverage across media such as CNN, NBC, USA Today, France 2, BBC, Sky News, The Times, The Telegraph, London Evening Standard, Huffington Post and The Guardian. The initial promotional film has been viewed 6.5 million times so far.
The five-minute film has been created by The Brooklyn Brothers and directed by the Bafta-nominated director Rupert Murray.
The video will be supported by social and digital activity as well as four teaser films.
Chris Gottlieb, chief marketing and comms officer at London & Partners, said: "This campaign is all about showing London for what it is: the greatest city on earth. It is one of our most successful campaigns to date and has engaged audiences around the world. London really can put on a show, and this film demonstrates just how well we do it."
Watch the teaser film here: