Dog House Fitness | Balham, London

Spinning and boxing studio in Balham. £20 for two classes for first timers.

KXU | Sloane Square, London

Luxurious gym in Sloane Square, featuring cardio, spinning and yoga classes. £24 for a single class, available on Classpass.

ONE LDN | Imperial Wharf, London

One gym, one studio, three sweaty classes: Hip Hop Hot Yoga, Muay Thai, Strength and Conditioning. 2 for 1 offer on class credits for first timers.