Mixed martial arts is one of the popular sports in the world, and its legion of disciples will only swell.

While the UFC is MMA's largest organisation, making household names out of Conor McGregor and Ronda Rousey, the sport of MMA itself can be practiced by anyone.

MMA is a brilliant way to exercise and stay in shape, as well as being far more enjoyable than running for hours on a treadmill.

Don't worry if you have no intention of stepping into the Octagon – practically every MMA gym welcomes those simply looking to keep fit, with numerous classes and PT sessions available.

And if you ever should wish to try your skills for real, sign up for sparring or even a white-collar event.

We've listed the best MMA gyms in London – click through the gallery below.

See you on the mat!

Did we miss your favourite MMA gym? Tweet @squaremile_com and we'll update our list.