12×3 | Paddington, London

12×3’s latest, slick West London addition. Small group boxing taught by professionals. Free first beginners class.

Sweat It | Aldwych, London

Strength training on the rig combined with running blocks on the skillmill. £20 for 3 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.