The London Underground celebrates 150 years of existence today. It was a century and a half ago on January 9th, 1863 that the first stretch of the network opened, and the following day saw passengers take the first public journeys between Paddington and Farringdon on the Metropolitan Railway. From humble beginnings, the London Underground now serves over 1 million passengers every single year over 12 lines (and links Central London to Surrey, Kent, Essex, Hertfordshire, Middlesex and Buckinghamshire) and over 1 billion journeys. It is getting busier every year with 64 million more passenger journeys thought to have taken place in 2012 compared to 2011, a new record. During the morning rush hour this morning, Waterloo will see 57,000 people enter it's Tube station during the three-hour peak. It is by far the busiest station with 82 million passengers boarding or exiting a Tube each year. To celebrate the London Underground anniversary, we have a special list for you. The London Underground is a mystical place to those who have never experienced travel in the capital below the bustling streets before. However, regardless of whether you are a hardened tube jumper or a novice there are some things you really should not do once you lose sight of daylight. After the jump, read our top 10 things you shouldnt do on the underground if you want to get out alive.