where to find us

iDFITNESS — Windsor & Waltham Cross: Premium Personal Training Gyms

Experience industry-leading small group personal training and fitness at iDFITNESS, now with two premium locations in Windsor and Waltham Cross. Achieve your goals with tailored sessions, expert coaches, and a supportive community.

iDFITNESS Windsor – Trinity Yard, 59 St Leonards Road, SL4 3BX

Located in the heart of Windsor, iDFITNESS offers small group personal training, individualised programming, and a welcoming environment for all ability levels. Our commitment to results, flexibility, and health-first coaching has made us Windsor’s leading strength and conditioning gym. Train with iDFITNESS Windsor and discover a motivating approach, flexible session booking, and a vibrant fitness community.

iDFITNESS Waltham Cross – Theobalds Business Park, Platinum Way, Cheshunt, EN8 8YD

Our Waltham Cross location at Theobalds Business Park brings iDFITNESS’ proven programming and group coaching to Cheshunt and surrounding areas. Enjoy our group sessions, accountability-driven programming, and inclusive support for every member. iDFITNESS Waltham Cross is your destination for expert-led fitness, strength gains, and real results in a fresh, modern gym environment.

Why Choose iDFITNESS?

Personalised, results-driven programming at both locations.
Flexible booking up to 45 minutes before your session.
Motivating small group atmosphere backed by knowledgeable, caring coaches.
Welcoming community with top reviews and proven member results.
Strength and conditioning for all ages and experience levels.

Join iDFITNESS and find your ideal personal training gym in Windsor or Waltham Cross. Book a free taster session — start your fitness journey with experts who put your goals first.

What our members think of us

5 Over 50 Reviews

Write a Review

maria o'brien 2 months ago

This is the perfect gym for motivation, there’s no going for a couple of weeks and then giving up. You’re encouraged to push yourself forward each week. It’s also fun with plenty of banter. Love it

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Becky Verano 5 months ago

Honestly…. This is the best gym experience I have had. You can tailor it to your level and I always feel that I have made the most of the hour that I spend with the trainers. Cannot recommend it enough.

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Adam Humphrey 5 months ago

Nick, Reg and the team have created a brilliantly supportive community who have helped me advance my fitness journey. And they do it with a smile and some very dodgy soundtracks. Thanks guys.

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Melanie Smart 5 months ago

Exceptional gym with tailored training plans and knowledgeable staff. Clean, supportive, and results-driven—highly recommended.”

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Iain Dysart 5 months ago

Really great training experience plus hard and fun. Love the team so helpful and friendly. Definitely recommend to train there.

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Suzy Read 5 months ago

Fabulous friendly place to train . The coaches are all knowledgeable and want the best for us . I absolutely love attending my training sessions and enjoy every minute of being there .

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Sarah Jane 11 months ago

iDFitness is by far the best PT/fitness studio I’ve ever been to. The training sessions with the team: Nick, Reginald, Zack and Jamie are excellent. The banter and music are second to none! I’ve got in shape, lost baby weight, made some lovely friends and become the strongest I’ve felt in a long time! Nick has created such a wonderful community, attending sessions always sets me up for the day. I cannot recommend this place more highly enough!

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Sophie Dalmedo 1 year ago

What sets IDFitness apart is the holistic approach they offer. Not only do they focus on fitness, but they also provide incredible support in areas like nutrition. The online portal they offer is a game-changer for me. It’s packed with valuable information, perfect for keeping me on track or getting back on the bandwagon when life gets in the way.

I’ve never felt more supported, and it’s been a key part of my success. If you’re looking for a place that genuinely wants to see you thrive in every aspect of your wellness, IDFitness is it! Highly recommend.

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Maria OCallaghan 1 year ago

ID Fitness is personal training for everyone – the vision embodied by founder and head coach, Nick Collins, as well as all the PT’s and members who are part of this special community.

I’d been looking to join a local gym in Windsor for some time and after doing lots of research and seeing all the positive reviews, decided to give ID a try. I am so glad I did.

When I first walked in I was unfit, self-conscious, unfamiliar with gym equipment and my exercise clothes had seen better days. I started on their 8 week programme and now after only 3 months I barely recognise myself. The classes and equipment are varied, flexible and fun, with small group tailored PT sessions as well as larger classes. The environment is welcoming and clean, where everyone is treated with encouragement, kindness and respect regardless of ability, age or experience. Nick and his hand picked team are industry experts – highly professional and caring, listening to and positively challenging their members to help them achieve their health and fitness goals through building consistency, strength, technique and social connection.

I love coming here and have met some lovely people along the way too, which was an unexpected bonus. I look forward to continuing to train at ID, and feel excited about achieving my health and fitness goals with their support.

It also feels great to support an independent business.

Thank you x

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