Inspired by this video from January 2012 showing the amount of dust that accumulates on a bus seat, Time Out magazine decided to conduct the same experiment on the London underground.
View this video on YouTube
Armed with a plastic mallet, staff headed out on to each of the tube lines to show how dirty the carriages really are.
The results are below:
Bakerloo line
Northern line
Victoria line
Piccadilly line
Hammersmith & City/Metropolitan lines
District and Circle lines
Central line
Jubilee line
You can watch the full Time Out video in all its glory here:
