If you live 1 mile around Archway, this is the gym to go to. It is simply massive, set in it's own building with the reception as you enter on the ground floor and changing areas at the back and a massive swimming pool to the right. Upstairs there is a large gym with big TV screens and modern machines, despite this being a Council gym.
It is very well maintained, the membership does not make a hole in your budget, my only negative point is the fact that is so busy at the weekend, so if you work in central London and do not have time to go there but at the weekend you will have to put up with the masses of people who use this gym. Surely during the week would be quieter but hey, I did not have the chance to use the facilities during the week. Recommended