www.se1gym.co.uk/adult-fitness-classes-and-workouts-in-se1/ The Circle gym and spa in se1 includes, a spa bath, sauna, steam room lounge and bar area, luxurious changing rooms with Motlton Brown Products, and 17 m luxury swimming pool. Swimming lessons are also available at The Circle Gym. We believe that our quality speaks for its self which is why there are no contracts on our monthly memberships and are excellent value.