What is the dirtiest line? (Picture: Getty Images)

Have you ever wondered what the dirtiest Underground Tube line is?

Probably not, because there’s no need to make your daily journey even more harrowing than it already is.

But Dr Ed has now figured it out apparently, and the Northern Line comes out as the most contaminated.

Researchers from the website took samples from the ten busiest lines and tested them to measure their level of colony-forming units (CFU), which are a measure of viable bacteria cells.


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(Picture: Dr Ed)

The Northern Line came out worst, followed by the Central Line, with the Bakerloo Line rounding up the top three.



If you want the cleanest ride possible then you should jump on the Hammersmith and City Line, apparently.

This had the lowest amount of CFUs out of the routes tested.

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Click to enlarge (Picture: Dr Ed)

The report also found the areas that had most germs in them at each of the ten stations.

According to the results you should avoid touching hand rails at Bank, Monument, Liverpool Street and Oxford Circus because they have the most germs.

For the same reason, using the touch screen machines at Stratford is also a bad idea.

And if you can avoid sitting down on the Central Line you should, because it has the dirtiest seats.

The dirtiest station overall was Stratford, with Bank and Monument joint second.

Click to enlarge (Picture: Dr Ed)

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