Bangla sanglap desk: Police are warning people not to attend New Year celebrations on the River Thames in London without a ticket, as spectators gather to usher in 2020.
More than 100,000 tickets have been bought for the sold-out fireworks display.
Firework shows are also to be held in cities including Manchester, Cardiff, Newcastle, Inverness and Nottingham.
Hogmanay celebrations have begun in Edinburgh, where crowds have gathered ahead of a massive display at midnight.
Fireworks have already been let off from Edinburgh Castle.
The Metropolitan Police urged those without tickets in London to watch from home or attend other events in the city.