We all miss using the London Underground as often as we used to. It definitely isn't the same as before the coronavirus pandemic and for social distancing purposes that is a good thing.
The sights, sounds and smells in particular are something most Londoners never imagined they would miss as much as they do.
But as well as transporting Londoners across the city, the Underground is also home to an unexpected.
This year's Wildlife Photographer of the Year competition's People's Choice Award was awarded to "Station Squabble", a picture of two mice appearing to battle it out on a London Underground platform.
Tube mice are tiny, dark-coated creatures which live on the Underground network and many of us have see, usually out of the corner our eye.
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Although some people can find mice frightening, the Tube mice tend to keep to themselves. But since we share a transport network with them, how much do you really know about them?
1. There are more Tube mice in London than people from Barnet
An estimated 500,000 tiny mice live in the network of tunnels on the London Underground.
That's more than the population of even London's biggest borough, Barnet, where 392,000 people live.
So really there are more Tube mice than people from any London borough, making them a pretty strong group if they learned to get representation.
2. They are not the only known animals to live in the tunnels
The Undeground is not the best habitat you can imagine, with an abject lack of sunlight or vegetation.
Which is why it might surprise you to learn there are other animals that call the network home.
There is a unique species of mosquito on the Underground which started life in the tunnels during the Second World War, when thousands would shelter in the tunnels.
It is called Culex pipiens molestus and it has a taste for human blood.
3. The mice at Farringdon are particularly vicious
The City can be a famously ruthless place to work, but also to commute from it seems.
In 2012 a message was written on Farringdon Station's noticeboard advising commuters to tuck their trousers into their socks after a spate of rogue mice attacks.
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4. They had a children's TV show made about them
In the 80s, an animated children's series called Tube Mice was aired, detailing the lives of four mice living in the tunnels of Oxford Circus station.
The series aired on Children's ITV as well as Nickelodeon and Tiny Pop in the UK and on local channels in South Africa, Germany, Hungary, Singapore and New Zealand.
5. They also like to dance
A battle between two mice may have made them (and photographer Sam Rowley) famous earlier this year, but during quarantine two mice decided there was another way to live.
Trading boxing gloves for dancing shoes, two mice were filmed foxtrotting around an empty platform at Notting Hill Gate while Londoners avoided the Tube during the lockdown.
6. They are more likely to be deaf or have no tails
Unfortunately there are hazards associated with the habitat they live in.
Tube mice have been found to have an increased likelihood of having their tails cut off or losing their hearing as a result of the Tube trains hurtling through the tunnels.
Those of us who have sat through the screeches of the Piccadilly and Central lines in particular will emptahise.
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7. Numbers may have fallen as less litter is dropped on platforms
This is more of an urban myth, but these creatures are masters of disguise.
Some Londoners say that because there is now less litter on Tube platforms than in decades past, the animals have less to eat.
As a result numbers have allegedly plummeted.