Transport for London predicted it would be a "difficult day" if the strike was well supported today. That seems to be putting it mildly. TfL's handy widget for services updates (below) shows a snapshot of the disruption. At the time of writing it showed delays and suspensions on all but the Northern line.
That's the overview, but how was it for you? Please help us tell the story by sharing your experiences of getting around London today. Perhaps you took one of the extra buses laid on by the mayor of London Boris Johnson, or did you beat the strike by bike or even by boat? Did you share a car journey, or just walk, or are you working from home?
Please post your stories and views in the comments section below, or send photos to matthew.weaver@guardian.co.uk.
9.35am:
People should walk more it's faster than the bus, argues our London blogger Dave Hill in part two tube strike journey.
My first thought about the crowd of fellow Londoners struggling for sardine status inside a pair of rammed number 25 bendy buses from Straford as if, well, trying to climb aboard a rush hour Tube, was, why didn't they just stride off down the wide pavement towards the looming Gherkin instead?
Meanwhile, the RMT says support for the strike is "rock solid" with disruption on all lines. But Mike Brown, London Underground's managing director, insisted it's not that bad.
"Londoners will face some disruption, but the city is not paralysed - and people will still be able to get around," he said.
