Around a million revellers gathered in Times Square in New York as the city welcomed in 2015.
There were cheers and kisses in the crowd after a glittering ball descended from high above and a ton of confetti rained down into the square.
People from all over the world line the streets to see the annual New Year's Day parade in London which this year was celebrating transport.
Hundreds of swimmers took part in New Year's Day dips in various chilly locations across the country.
Make sure you avoid all the road and tube closures - and find out which services run for free - with our comprehensive guide