Big screens to show wedding live
The royal wedding is to be broadcast live on giant screens at two central London locations.
Spectators in Hyde Park and Trafalgar Square will be able to watch Prince William marry Kate Middleton on April 29.
The event is being staged by the Department of Culture, Media and Sport, London Mayor Boris Johnson and the Royal Parks.
Mr Johnson said: "The royal wedding will be a truly momentous occasion and we want everyone to be able to join in the celebrations.
"This is a fantastic opportunity for London to show the world how we relish our traditions and that we know how to throw a party, as well as being an unrivalled city for culture, cuisine and business."
Tens of thousands of well-wishers are expected to flock to the capital on the big day but for those who have missed a good vantage point along the wedding procession route, watching events on the big screens could be the next best thing.
Tourism Minister John Penrose said: "London is a fantastic tourist attraction in itself, but the royal wedding will make it even more so.
"So it is right that we do everything we can - including live TV coverage on big screens - to make the visitor experience on that glorious day as peaceful and enjoyable for everyone as possible."