More than 100,000 spectators will descend on central London to watch the Mayor’s firework display tonight as the capital gears up for New Year’s Eve.
London gears up for sell-out New Year's Eve firework display with over 100,000 set to attend
Barriers have been put in place lining the streets ahead of the display, which has sold out.
Fences have also been erected around fountains at Trafalgar Square ahead of Tuesday’s New Year’s Day parade.
Tickets are no longer available but the display is visible from Greenwich Park, Hampstead Heath, Vauxhall Bridge and Lambeth Bridge if it is a clear night.
They are also shown on BBC One from 23.35pm.
People are being advised not to take to the capital's bridges to watch the fireworks for their own safety.
Mr Khan said: “Every year our capital puts on the greatest fireworks show in the world with the spectacular images of our skyline shared all around the globe.
“I’m proud that this year the millions watching around the world will see us send a message of support to more than one million EU citizens who call London their home.
“By paying tribute to our close relationship with Europe as we welcome in the New Year, we will once again show the world that London will always be open.”
Travel on TfL public transport is free from 23:45 on New Year's Eve until 04:30 on New Year's Day, and a special night Tube service will run on most lines.
But those wanting to travel using South Western Railway may struggle, as services will be disrupted by another strike.
A reduced service will run across their whole network.
The Police have warned those celebrating to keep an eye on belongings and stay safe.
Gold Commander for the night, Deputy Assistant Commissioner Lucy D’Orsi, said: "It is a lovely time of year and we would like everyone who comes to London to have a good time.
"The safety of those attending is our top priority and officers have been planning for several months for New Year’s Eve. Officers will be out and about to deter criminals and keep crowds safe but we need you to look after yourself and those around you as well.
Thousands of people will pack London's streets to celebrate the New Year (Getty Images)
"If you see anything suspicious or that causes you concern, please tell a steward or police officer. Keep an eye on your belongings and only bring what you need.
“Make sure you agree a meeting location should you become separated from your friends and family. I would also urge you to plan your journey. If you have a ticket for the fireworks, arrive in plenty of time as there will be a robust search regime, so it will take longer to get into the viewing area.
“Make sure you know how you are getting home. There is a huge demand for public transport at certain points during the evening. After midnight you may have to wait some time before getting on the tube or train so be prepared to queue. Check the website at www.tfl.gov.uk to get updates on your journey.
“You wouldn’t get into a stranger’s car, so please don’t use unlicensed and unregulated mini cabs. Most importantly, I hope you enjoy yourself and have a happy new year."