The brainchild of anarchist collective the Space Hijackers, the aim of the party is for partygoers, protesters and passengers alike to celebrate their freedom by creating a 'pleasure space' in London's capitalist heartland. Last year's party saw over 600 people cram into four carriages.

Stereo equipment, disco lights, nibbles and copious amounts of alcohol are all smuggled onto trains in suitcases. When the train pulls away from the station, the pole dancing podium is assembled and the tequila bar set up. Every time the doors open the suitcases slam shut and everyone tries to look like bored commuters.

Tonight is expected to be the biggest and best Circle Line Party yet, with Asian Dub Foundation rumoured to be making an appearance and a massive sound system on board.

And if you fancy going Underground tonight remember, the first rule of CLP is "never talk about CLP!"

Circle Line Party - tonight
Train leaves from Liverpool Street station at 7.30pm and you can hop on board at any Circle Line station

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