About KAYVAN
Meet Kayvan Seyri – London Personal Trainer & Performance Coach
Kayvan stands as one of the UK’s most accomplished personal fitness trainers, blending a lifetime of professional sports achievements with a passion for helping others unlock their full potential. As a London personal trainer and sports performance coach, Kayvan Seyri delivers results through evidence-based, strength and conditioning methods.
With over 30 major championships and titles spanning roles as a player, performance coach, and performance director, Kayvan’s expertise is unmatched. As a partner in the London Lions Basketball Club, his leadership has driven teams to victory in prestigious competitions such as:
- EuroCup Championship
- British Basketball League (BBL) League Champions
- Play-off Champions across multiple seasons
Kayvan’s illustrious career includes representing Iran’s National Basketball Team and working with the England Women’s National Basketball Team and Team GB Men’s Paralympic Basketball players. His contributions have left an indelible mark on the world of professional sports, both on and off the court.
Now, Kayvan brings this wealth of knowledge to his clients, delivering bespoke wellness and longevity programs that integrate Performance Mindset, Nutrition, Movement, and Recovery. His evidence-based strategies guarantee measurable results, helping clients build sustainable high performance in mind and body.
Kayvan’s exclusive roster of clients includes:
- High-profile celebrities, such as Samantha Simons and Naomie Harris
- Team GB athletes and former NBA players
- Tech CEOs and influential leaders
Discretion and professionalism are paramount, with NDAs in place to protect his clients’ privacy.
This isn’t just fitness – it’s a partnership built on trust, proven results, and an unwavering commitment to excellence.
If you’re ready to take your performance to the next level, contact Kayvan today. Learn more about his programmes on the Services page.
Education & Qualifications:
- MSc: Kenisiology (Human Movement Science), A.T. Still University, USA (2012)
- BSc (Hons): Sport and health Science, Azad University, Iran (1995)
- Strength and Conditioning Specialist Recertified with Distinction (CSCS *D) (2008)
EXOS Performance Specialist (XPS) (2014)
- Performance Enhancement Specialist (PES) & Exercise Corrective Specialist (CES)
- The National Academy of Sport Medicine (2006-2007)
- The National Strength and Conditioning Association’s Personal Trainer NSCA-CPT *D (2004)
- Diploma: Exercise Physiology (2003)
- DNA Fit Certified (2014)
Professional Sports Achievements as a playeR, Performance COAch, performance director and partner:
- EuroCup Women Champion 2024
- EuroCup Mens Final Four 2023
- British Basketball League (BBL) Cup Champion 2019-2023
- BBL & WBBL League Champion 2021-2024
- WBBL play-off Champion 2020 – 2024
- BBL play-off Champion 2023 – 2024
- BBL Trophy Final Champion 2021
- BBL All-Star Winner 2017 and 2019
- British Basketball League (BBL) play-off Runner up 2015 and 2018
- England Women’s National Basketball Team – Performance Enhancement coach 2009-2012, 2016 and 2017
- London Capital Basketball Team – Strength & Conditioning coach 2005-2010
- Performance Coach with Team GB Mens Paralympics Basketball players ahead of European championship and Athen Olympic game 2004
- Iran National Junior and Senior Basketball player 1988-1995
- Iran National player at world International Military Sports Council (CISM) 1992
- Professional Iranian basketball player and holding number super-league titles (1984-1997)
Publications
- Literature review on Electrical Stimulation and its effect on sports performance by the National Strength and Conditioning Association (NSCA), Journal of Strength and Conditioning 2011
- Physiology of Ultra Endurance Triathletes (under review)
- Nutritional Strategies for athletic performance of strength and power athletes; Nutritional Strategies of an elite basketball player: A case study (under review)
Workouts that don't feel like work with expert guidance
Kayvan serves clients in the prestigious Regent’s Park area of London, offering bespoke training in an exclusive setting. For added convenience, he provides on-site services tailored to client preferences.
For those seeking flexibility, Kayvan delivers unmatched online coaching through his cutting-edge performance personal training app, offering comprehensive support and exceptional resources to ensure your success.
I trained with Kayvan at Regents Place and truly enjoyed every session. He’s knowledgeable, motivating, and really knows how to tailor workouts to individual goals. One of the things I appreciated most was how much emphasis he placed on building proper technique, which not only helped me train safely but also made me noticeably stronger over time. I always felt supported and challenged in the best way, and his positive energy made training something I genuinely looked forward to. Highly recommend working with him if you’re serious about progress and want a trainer who really cares.
Response from the owner 14:45 13 May 25
Thank you so much for your wonderful feedback! We're thrilled to hear that you enjoyed your training sessions with Kayvan and found his approach effective and motivating. It's great to know that his focus on proper technique and personalized workouts has made a positive impact on your strength and overall fitness journey. We appreciate your recommendation and look forward to continuing to support you in achieving your goals. 
Kayvan is an outstanding personal trainer! I really enjoyed working with him—his professionalism and deep knowledge of the human body are truly impressive. Thanks to his guidance, I was finally able to fix my posture while getting stronger on my lifts, all without risking injury. Highly recommended!
Response from the owner 13:41 07 May 25
Thank you for your wonderful feedback! We're thrilled to hear that Kayvan's expertise and guidance have positively impacted your training and posture. Your recommendation means a lot to us, and we look forward to continuing to support your fitness journey! 
I had personal training sessions with Kayvan which were super effective! Lost a bit of weight and without any complex equipment and mostly doing our sessions at our fairly small small! Also my running posture got much better after training with Kayvan.
Response from the owner 13:02 06 May 25
Thank you for your fantastic feedback! We're thrilled to hear that your personal training sessions with Kayvan have been effective and that you've seen such great results. Improving your running posture and losing weight without the need for complex equipment is an impressive achievement. Your progress is inspiring, and we look forward to supporting you in your fitness journey! 
I’ve been working with Kayvan for over 10 years, and he has been a key figure in both my rehabilitation and my strength and conditioning journey. His dedication, professionalism, and depth of knowledge are truly unmatched. Kayvan tailors every session to meet individual needs, ensuring both progress and safety, which has been vital in my long-term recovery and performance. I’ve also referred patients to him for support, including post-surgical rehab and general fitness, and the feedback has consistently been excellent. I can’t recommend Kayvan highly enough — he stands out as one of the very best in his field.
Response from the owner 22:30 05 May 25
Thank you for your wonderful review! We're thrilled to hear about your positive experience with Kayvan over the years. His commitment to personalized training and his expertise truly make a difference in the lives of his clients. We greatly appreciate your referrals and the trust you've placed in us. Your recommendation means a lot and motivates us to continue providing exceptional service. 
Kayvan is the best personal trainer l've worked with.
He is an expert, spending a lot of time with professional athletes, but if you're not at that level, don't let that put you off.
He has been able to tailor my training through a complex chronic illness and enabled me to keep pushing through it.
I'm in a much better place thanks to his help. I'm confident that whatever you're looking for Kayvan has the knowledge and experience to get you there!
He is an expert, spending a lot of time with professional athletes, but if you're not at that level, don't let that put you off.
He has been able to tailor my training through a complex chronic illness and enabled me to keep pushing through it.
I'm in a much better place thanks to his help. I'm confident that whatever you're looking for Kayvan has the knowledge and experience to get you there!
Response from the owner 16:30 05 May 25
Thank you for your glowing review, Callum! We're thrilled to hear about your positive experience with Kayvan and how he has been able to tailor your training to suit your needs. It's inspiring to know that you're in a better place thanks to his support. Your confidence in his expertise means a lot to us. We look forward to continuing to support you on your fitness journey! 
Kayvan Seyri is an incredibly professional and knowledgeable coach. He truly cares about his work and has a clear plan to help you get results. His training methods are effective, enjoyable, and always updated. More than just a trainer, he’s a great motivator who makes you feel supported and inspired every step of the way. If you’re looking for someone who takes your goals seriously and pushes you to reach them,
I highly recommend Kayvan!
I highly recommend Kayvan!
Response from the owner 15:01 05 May 25
Thank you for your wonderful review and kind words about Kayvan Seyri! We’re thrilled to hear that you found his training methods effective and enjoyable. Your recognition of his professionalism and motivational skills reinforces our commitment to providing exceptional coaching. We appreciate your recommendation and look forward to supporting you on your fitness journey! 
I have trained with Kayvan for a number of years now and am an enthusiastic client. He has both professional and academic experience to train you in a deeply personalised way. An elite athlete himself, he is the former fitness and conditioning coach of a professional sports team, as well as having an advanced degree in sports science.
Response from the owner 07:58 05 May 25
Thank you for your wonderful review, Peter! We're thrilled to hear that your training experience with Kayvan has been so positive and personalized. His expertise truly makes a difference, and we're glad you're benefiting from his extensive knowledge and background. We appreciate your enthusiasm and look forward to continuing to support your fitness journey! 
Kayvan has changed my physique and educated my mind. I have been training with him for quite some time now – I was fortunate to find him, following my second hip replacement.
Beginning from when I was so weak that I couldn’t even stand on the rung of a ladder - and didn’t know how to help myself - I am now knowledgeable and purposeful in my strength/conditioning, proper weight lifting and cardio exercises. My stamina and energy surpass my expectations and I will continue to trust his bespoke training plan, into the future.
I can see no reason to give up. Kayvan has allowed me to feel strong and to have confidence that I will continue to see improvement. I am determined to pursue the freedom and success, I am already enjoying.
I recommend Kayvan to anyone wishing to be motivated and guided towards personal fitness goals. Kayvan is immensely qualified and experienced to move you forward – and along the way, you surprise yourself!
Beginning from when I was so weak that I couldn’t even stand on the rung of a ladder - and didn’t know how to help myself - I am now knowledgeable and purposeful in my strength/conditioning, proper weight lifting and cardio exercises. My stamina and energy surpass my expectations and I will continue to trust his bespoke training plan, into the future.
I can see no reason to give up. Kayvan has allowed me to feel strong and to have confidence that I will continue to see improvement. I am determined to pursue the freedom and success, I am already enjoying.
I recommend Kayvan to anyone wishing to be motivated and guided towards personal fitness goals. Kayvan is immensely qualified and experienced to move you forward – and along the way, you surprise yourself!
I have trained with Kayvan during a significant part of 2015. Kayvan is a very competent and qualified trainer that focuses on all aspects of physical well being. This includes working on posture and flexibility as well as strength, stamina and toning. He is also very kind and pleasant to work with and I would highly recommend his services to anyone seriously motivated to achieve meaningful fitness goals.
I have been training with Kayvan since 2012, and he has completely changed my physique and my mindset on how I look after my body. I decreased my body fat percentage and have improved my strength, and when I am struggling with my work/life balance he always keeps me focused and on-track. Kayvan has helped me through a back and shoulder injury, ensuring my training is suitable and helps support my rehabilitation.
As we train at my house, he is flexible with our training schedules, and looks for innovative ways to try new techniques. Mainly we do resistance and circuit style training, but also bring in boxing and weights to mix things up.
Along with my personalized training plan, Kayvan has recommended diet plans that support the exercise, and we undertook a DNA test together to be assured that the work we were doing together was 100% right for me. It is these extra support services which set Kayvan apart as his knowledge and understanding is far beyond your average gym PT.
I would 100% recommend an assessment with Kayvan to see what he can do to you to help you achieve goals, and maintain them in the long run.
As we train at my house, he is flexible with our training schedules, and looks for innovative ways to try new techniques. Mainly we do resistance and circuit style training, but also bring in boxing and weights to mix things up.
Along with my personalized training plan, Kayvan has recommended diet plans that support the exercise, and we undertook a DNA test together to be assured that the work we were doing together was 100% right for me. It is these extra support services which set Kayvan apart as his knowledge and understanding is far beyond your average gym PT.
I would 100% recommend an assessment with Kayvan to see what he can do to you to help you achieve goals, and maintain them in the long run.
Kayvan Seyri Personal Training Regent’s Park, MayFair, Marylebone, St John’s Wood, Primrose Hill, Hampstead, Fitzrovia, Notting Hill