Requiring help: A woman lies on the pavement during New Year's Eve celebrations last night in central Birmingham
It was the night when revellers across Britain let their hair down for the biggest party of the year.
Millions
took to the streets to celebrate a night to remember as the country
ushered in 2015 - and some clearly enjoyed the occasion more than
others.
But it all got a bit too much for some party-goers, as some of these photographs from across the country show.
Smiles and kisses: Revellers celebrate the New Year by enjoying a night out in Cardiff, South Wales
Arrest: A man is held by two police officers on New Year's Eve in Manchester city centre
Altercation: New Year's Eve revellers seeing out 2014 in Newcastle, close to the Bigg Market
One without shoes: These four New Year's Eve revellers were pictured on the street in Newcastle last night
Injured: This woman was left with a bloody nose after the bust-up in the centre of Newcastle-upon-Tyne last night
Medics: London Ambulance Service staff treating revellers during New Year's Eve in London as ambulance services experienced a busy night
As of 6am today, there had been a total of 90 arrests made by Metropolitan Police officers working on the policing operation for New Year's Eve.
This was broken down into 27 on suspicion of being drunk and disorderly, 22 for assault, seven for sexual offences and six for drugs.
Dancing in the street: Revellers took to the Liverpool city centre last night to celebrate the end of 2014 and see in the New Year
Waiting for the bus: Four women - two barefoot - take refuge in a bus shelter on New Year's Eve in Cardiff
Catching some sleep: This woman decided to lie in the gutter on Prince of Wales Road in Norwich on New Year's Eve
Paramedics on the scene: A woman stumbles into an ambulance in Liverpool city centre last night as revellers celebrated the New Year
Helping hand: A woman is supported as she walks along Broad Street in Birmingham
Superintendent Robyn Williams said: 'Officers worked hard, alongside stewards, to keep people safe during the event and ensure that everyone who came into central London to enjoy the fireworks was able to make their way home at the end of the night.
'The event passed off safely and appeared to be enjoyed by the crowd - the primary objectives of the operation.'
Humberside Police recorded more than one incident log a minute last night as violence marred New Year celebrations across the region.
The force received 390 calls for help between midnight and 4am, with 304 logged as incidents for officers to attend, reported the Hull Daily Mail.
A police spokesman said: 'It was a busy night. Some years it is really quiet and others it goes bananas.'
One way to start the New Year: This man found himself arrested by police on Prince of Wales Road in Norwich
Better out than in: A man gives his friend some moral support after the New Year's Eve excesses all got too much for him
Assistance: Friends look after a fallen reveller on New Year's Eve in the centre of Liverpool
Medical aid: This reveller found herself being taken away from Norwich city centre by ambulance
One step at a time: Two friends support each other as they walk along Broad Street in Birmingham
Hogmanay was the busiest night of the year for the Scottish Ambulance Service, which dealt with 2,394 calls to its 999 centres across Scotland.
Call volumes were 2 per cent lower than last year's total of 2,443, however the service said it experienced intense periods of high demand, managing over 250 calls per hour between midnight and 7am.
Additional call handlers, dispatchers and ambulance crews were on duty to deal with the surge in demand across the country and Cardonald, which covers the West and South West of the country, was the busiest of the three ambulance control centres (ACC).
Inverness experienced a 16 per cent increase in call volumes in the north of Scotland.
Between midnight and 7am demand was particularly high across Scotland and during that time ambulance control rooms dealt with 1,829 emergency calls, which was 76 per cent of total demand.
Time for sharing: A young woman shares a late night supper with a man on a bench in the Bigg Market, Newcastle
Enjoying themselves: Two men were among revellers in Liverpool city centre last night celebrating the New Year
Embrace: Two women celebrate the New Year with a kiss on Princes Street in Edinburgh
Tension: Men confronting each other on Newgate Street, close to the Bigg Market in Newcastle-upon-Tyne
Chilly: Partygoers on Broad Street in Birmingham during New Year's Eve celebrations
Pauline Howie, chief executive of the Scottish Ambulance Service, said: 'As always, Hogmanay was our busiest night of the year and our teams dealt with a high volume of calls across the country.
'While there were slightly fewer calls overall than last year, the activity at times was intense, with 76 per cent of the workload occurring between midnight and 7am.
'All of the teams in our control rooms and out on the streets demonstrated their professionalism and commitment, doing a fantastic job of delivering care to those in need.'
Ambulance services had braced themselves for a busy night, with London Ambulance Service expecting up to 600 calls an hour,
Operations director Jason Killens said: 'Over 100 emergency calls in the first 15 minutes since midnight - its getting busy this London NYE.'
Cold night: Revellers celebrate the New Year by enjoying an evening out in Cardiff, as thousands of people took to the city's streets
The aftermath: A workman begins the task of clearing away the mess left by thousands of people on the Embankment in central London
Following the fireworks: Workers begins to clear away mess left by members of the public on the Embankment in central London
Litter on the streets: People walking along Victoria Embankment after the fireworks display over the London Eye, in central London
Almost empty: A single car can be seen driving through what is usually a notorious blackspot for traffic on the M3 near Winchester today
Meanwhile, West Midlands Ambulance Service tweeted: 'We've had more than 100 999 calls within the first 30 minutes of 2015.
'Quite a few are alcohol related. Please drink responsibly.'
And an East Midlands Ambulance Service spokesman said: 'We've had over 340 calls in first two hours.
'That's a new call every 21 seconds. Call handlers doing great job answering 99 per cent of those within five seconds.'