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Our Services

Making Your Goals a Reality

Professional. Effective. Fitness.

At NK Fitness our goal is simple:  To ensure that you, along with all of our clients, receive the highest quality training advice and support and that we deliver it to you exactly when and how you need it.  This means giving you cutting edge, bespoke and fad-free personal training / strength & conditioning solutions based upon our perfect blend of experience, proven training techniques and the latest research from the fields of health, fitness and performance.

At NK Fitness it really is all about you!  Our small team of expert personal trainers and coaches are passionate about delivering a results driven service and outstanding value for money in a highly friendly and personable way.  All hailing from the West Country originally we value honesty, integrity and reliability in everything that we do and provide mobile personal training services throughout Berkshire, Surrey, Central and South West London.

Founded by leading high performance fitness coach Nathan Kelly we are proud of our proven track record having successfully worked with Olympians, professional teams, professional athletes, celebrities, prominent London professionals and many many more.  However, we are even more proud of our outstanding client retention and very loyal clientele - please check out our testimonials and case studies for more information on our previous and current work.

Whether you’re looking for personal training to transform your body or restore it to a former glory, or you’re an athlete needing to find the extra 5% in your competitive performance then please feel free to browse our training pages where you will find all of the information you need about the services we offer to get the best from you.  For those simply wanting a little advice please check out our blogs, videos and social media links for lots of the latest tips and information to get you looking and feeling great.

We look forward to welcoming you to Team NK!

Meet Your Team

Professional trainers to help you achieve your goals

Nathan Kelly

Nathans experience is second to none. With the ability to improve even the fittest person it's clear to see why so many professional athletes train with Nathan.

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Toby Williamson

Toby's passion for fitness and a healthier lifestyle is very addictive. With his support and knowledge you will meet your goals and sustain them.

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Franki Clapham

Franki is an energetic and enthusiastic personal trainer with a positive attitude which is contagious.

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Chris Bylthe

Chris' approach to training will allow you to find a method of training you enjoy and will keep you motivated to surpass your goals.

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See what our amazing clients have to say about us

I asked you to sort out my upper body and you delivered! But you also made me do legs too to achieve the balance. Your professional expertise made the difference and you provided the motivation to make me stick to the plan. You varied the exercises each time so that I wouldn't get bored, and you provided your philosophical take on life for free!
You've been a great friend in the process.

Julian Cox

I have had a few sessions with Franki now and already starting to feel stronger and more confident. All sessions are tailor made so I can get the best out of workouts. Franki is so supportive and motivating and is always able to give any advice on home workouts. Will definitely be continuing with her. I think it is obvious that I would highly recommed.

Sophie K

Toby has been my coach for three years both online and offline and I'd highly recommend him. He delivers varied, tailored programming in a professional and fun manner that supports constant progression and development.

Rob Waddell

Fantastic experience being coached by Nath Kelly. I was lucky enough to do a strength and conditioning program with him whilst studying at college. The results I seen were outstanding and my performance surpassed my expectations. 6 years on I am still using these sessions to keep me in shape. Nath really made training fun, fresh and exciting. Naths background knowledge is phenomanal and I honestly haven't come across a more enthusiastic coach since.

Scott Stitt

I have been attending Boot Camp now for 6mths. I totally enjoy every minute even when i feel i cannot do anymore but Nathan gives us such enthusiasm and makes me want to work harder. He puts a lot of thought into what we are doing each week. My body is always aching the next day which is a sure sign of a good session!

Jo Welch

I can't thank Nath enough for all the hard work and advise he has given me over the last couple of weeks getting me this new programme to work around my old one , he certainly is top of his game very knowledgeable in all aspects of fitness , I would defiantly recommend him and NK fitness

Lindsay Pearce