In pictures: the best Tube sign pranks

Anyone who has used London's Tube network will know there are some unwritten rules about how to behave on the Underground.

With that in mind, pranksters have adapted some of Transport for London's official signs to amuse those facing a drudgerous commute.

The made-up advice includes recommending that iPods be worn "at all times", unless you don't have one in which case you should "play with your phone, read your newspaper or pretend to be asleep".

Another suggestion is to avoid all eye contact, or face a fine of £200.

Enjoy some of the best joke signs below.

Pictures from imgur.