It might have escaped your notice, but London's underground service ran throughout the night for the first time into Saturday morning.
Trains ran on the Central and Victoria lines, while TfL and London mayor Sadiq Khan plan to expand the service to take in the Northern, Piccadilly and Jubilee lines later this year.
So what did London's first attempt at running an all-night service look like?
The Night Tube in numbers
TfL estimates that 50,000 customer journeys were completed using trains last night and this morning.
Khan was among the first users of the service, getting on a Victoria line train from Brixton.
Oxford Circus was particularly busy, with 6,500 people tapping in at the nexus of the Central and Victoria lines.
And it sounds like a lot of people were heading eastwards, with 4,250 people tapping out of Night Tube services in Stratford.
It has been estimated that 24 hour tubes could be worth up to £43bn for London's economy, and could create more than 100,000 jobs.
TfL argues that more than 50 per cent of expected users of the weekend service will be travelling to or from work, and adds that over 500 jobs have already been created directly by the service, with roles including part-time drivers, station staff, maintenance workers and service control staff, while new officers for the British Transport Police have also been put on the network.
Khan said: “It’s wonderful that so many thousands of Londoners were able to benefit from a faster and simpler journey home overnight.
“The Night Tube is going to provide a huge boost to our capital and very clearly demonstrates that London is open. It was a real pleasure for me to see first-hand how workers and those who had been out enjoying everything our city has to offer could take advantage of this fantastic new service.”
Night time services will run on Friday and Saturday nights and Saturday and Sunday mornings, with six trains per hour expected to run through central London between 00.30 and 05.30.