Please note: availability depends on gym capacity and location within a 5-mile radius of your area. An optional add-on fee applies at booking. Click HERE to search for trainers.
Guest Pass
Train at The Mill Gym and Studio with your Fitness999-approved personal trainer and make the most of our excellent facilities during staffed hours.
Your day pass gives you one visit to the gym of your choice, valid for 30 days from purchase. Use it to train 1-on-1 with your qualified F999 coach in either our strength-focused room, HIIT zone, or brand-new studio.
Day pass: £10 – buy as a one-off or as often as you like.
Please note: Access is only available during staffed hours.
Complimentaries
Locker use
About this place
The Mill Gym and Studio – NW7
Come with your Fitness999 personal trainer and experience our fantastic facilities, designed to give you everything you need for a great workout. Our friendly team is always on hand to offer support, answer questions, and help you get the most from your training.
Our gym is split into two dedicated zones:
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Strength Room – packed with racks, dumbbells, and resistance equipment for building power and muscle.
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HIIT Room – equipped with cardio machines, punch bags, and an Astro turf strip for dynamic, high-energy training.
Our brand-new studio features 16 spin bikes and hosts a wide range of classes, from Spin and Body Pump to Yoga and more.
You’ll find us at Mill Hill School Sports Centre on The Ridgeway, with the 240 bus stopping right outside. Mill Hill East is the nearest overground station, and if you’re driving, we’re just 15 minutes from the M1.
Amenities
Changing Rooms
Parking
Equipments
Free Weights
Functional Training
Mat area
Olympic weights
Punch bags
Resistance machines
Spin Bikes
Video Tour
Frequently Asked Questions
What equipment is included with the guest pass?
You have access to all equipment in the gym.
How long is the PT guest pass valid for?
This is valid for up to 2 hours of training with your Fitness999 PT and must be redeemed within 30 days of issue.
What should I bring when using the PT guest pass (e.g., ID, workout gear)?
Please bring your ID, a towel, and water."
Can I bring a friend or family member with me on the guest pass?
Sorry, guest passes are only valid when attending with your chosen Fitness999 PT.

