Check out our recs on the best barre, spin, pilates, boxing, weights and yoga classes too.
Rumble, which has a flagship gym in Dalston and a new circuit studio in Primrose Hill (with Fitzrovia and Shoreditch on the way), runs the most flexible HIIT classes in the UK. The HIIT circuit classes, which consist of four stations taking 10 minutes each to complete, run for 40 minutes throughout the day, meaning you can join in after every 10 minute station rotation, so you don’t have to worry about arriving early or running late. The circuits focus on a different body part each day, and each station has a screen detailing the exercises and running a timer, with trainers on hand to assist and motivate you. Rumble also plants a tree for every workout to offset its carbon emissions, so you’ll be doing a good deed by getting a sweat on.
Dalston & Primrose Hill
Barry’s is the OG when it comes to treadmill and weights interval training. Loved by celebs and fitness fanatics from LA to London, you can burn up to 1000 calories in a class (believe us, they make you work HARD) in one of their signature red-tinted studios. Each day has a different focus, so you can target specific muscle groups or go in for a full body workout.
Bayswater, Belgravia, Bloomsbury, City of London, Soho, Canary Wharf & Shoreditch
It’s absolutely huge in Australia and now F45 is a craze over here too because those who go swear by it. It’s a pretty simple concept; there are 31 varieties of 45-minute, high-intensity circuit workouts (mainly cardio or resistance based) with a different class on offer every day. The workouts are intense but effective, and there’s enough variation to keep you interested.