Those planning to head to the New Year's Eve fireworks display at the London Eye have been warned to get there early.
The hugely popular event is being ticketed for the first time, at £10 each, and non-ticketholders are being advised to avoid the area.
It will not be shown on screens at Trafalgar Square and St James Park.
The event is also being televised on BBC1 from 11.50pm.
Road closures will begin as early as 2pm, with most closures in place from 8pm, stretching from Oxford Street in the north to Elephant and Castle in the south, and Vauxhall Bridge in the west to Southwark Bridge in the east.
There will also be some bridge closures. Some central London Tube stations will become exit only, be closed completely or for periods at a time for crowd management and safety purposes.
Why not try out some of the following areas as free vantage points?
Alexandra Palace - closest station, Wood Green
Greenwich Park - closest station, Greenwich
Cannon Street - closest station, Cannon Street
Mayor of London Boris Johnson said: 'The London New Year's Eve fireworks display is a major operation, which involves months of planning and the involvement of many partners, from the Met Police to TfL and emergency services to local authorities.
"It is a spectacular show enjoyed by people up and down the country and around the world and we have brought in ticketing to ensure crowd safety on the night and the event's future sustainability.
There will also be free travel all night on all its public transport services, from 11.45pm on New Year's Eve until 4.30am on New Year's Day.