About Us

Kidney Beam is an online exercise, education, diet and lifestyle platform with classes designed to help people with kidney disease - and its associated conditions - become more physically active and improve overall wellbeing.

We offer a range of online video classes and step-by-step programmes to help patients take care of their physical and mental health, all delivered by expert kidney health professionals - including physiotherapists, doctors, dietitians, specialist nurses, psychologists, and people with lived experience of kidney disease.

Kidney Beam's programmes have been developed specifically to help tackle the challenges people with kidney disease face in keeping active and well.

Woman exercising with yellow dumbbells in her kitchen

Developed in partnership with world-leading clinicians, charities and researchers

Meet The Beam Team

Katie Bell

Co-Founder & CEO

Katie is a serial tech entrepreneur and former software engineer with over 17 years’ experience building and scaling technology products and businesses across the UK and US. She began her career in IT consultancy, working on complex multi-threaded technology projects in the finance sector for clients including HBOS, Bank of America and Hitachi, before moving into the startup world. She has since founded and led multiple ventures from the ground up, including a successful exit, and graduated from the Oxygen Accelerator in London as CTO of Cherry Bird.

For the past decade, Katie has focused on health-tech innovation, developing patient-centred solutions designed around real user needs and measurable impact. Combining deep technical expertise with commercial leadership experience, she has a strong track record of delivering complex product development initiatives from concept through to growth. Katie has also successfully managed three previous Innovate UK funded grants, further demonstrating her ability to execute innovation-led projects at scale.

Professor Sharlene Greenwood

Co-Founder & Chief Medical Officer

Sharlene is passionate about driving forward a tangible solution for routine access to kidney-specific lifestyle management support for all people living with chronic kidney disease and cardio-kidney-metabolic conditions.

More than 20 years ago, she began working with people living with chronic kidney disease for the first time and was struck by the lack of routine access to exercise-based rehabilitation available to this patient population. This experience shaped the direction of her career, leading her to spend the past two decades spearheading research and clinical implementation projects focused on addressing this inequity and improving access to specialist support and care.

Jamie smiles against a leafy green background

Jamie Starr

Chief Marketing Officer

Jamie has over 18 years’ experience across communications, marketing and digital product development, including 7 years in health technology.

She is passionate about creating innovative products that genuinely improve people’s lives and make healthcare more accessible. Before joining Kidney Beam, Jamie was Marketing Director and Product Owner for one of the UK’s leading virtual care apps, Clinitouch. She has also helped launch a digital pharmacy for people with long-term conditions, worked on diabetes education programmes, and supported the launch of an international health charity focused on improving the lives of people living in sub-Saharan Africa.

She is excited to be part of Kidney Beam’s mission to support people living with kidney disease through accessible, patient-centred care.

Natasha Wynn

Studio Manager

Natasha has been working in the health and wellbeing industry for over 10 years, starting as a fitness instructor and personal trainer before moving into studio management and digital health. A former professional dancer, she lives with Ehlers Danlos Syndrome and Fibromyalgia, giving her first hand experience, and a unique perspective into the lives of people with chronic and long term health conditions.

Natasha also owns her own photography business, providing authentic visuals for people in the creative and wellbeing industries.

Meet the Clinical Team

Christy Walklin - Clinical Lead

Christy is a Clinical Lead Physiotherapist in the Renal Rehabilitation and Exercise Team at King’s College Hospital London, as well as Clinical Lead at Kidney Beam. He enjoys working with patients to achieve their goals, as well as playing hockey in the national league, and spending time with friends and family.
Herolin Lindup - Health Coach

Herolin worked as a technical instructor for over 15 years at King’s College Hospital in London. She specialises in supporting people with a range of kidney conditions in getting active.
Linda Haggis - Health Coach

Linda Haggis is one of our dedicated health coaches, guiding patients through programmes to improve their health and wellbeing.

Mrudula is a 78 yr old lady with chronic kidney disease (CKD). She is approaching end stage where she will need to commence dialysis treatment or have a kidney transplant.

Mrudula has reported struggling with her walking and getting up and down stairs, and feels anxious and worried about how she is going to cope.

If Mrudula had a cardiac, pulmonary, or even cancer diagnosis, she would get routine access to specialist rehabilitation at a local hospital.

But, because there are very few units that offer kidney-specific services of this kind, she isn’t able to access the care she desperately needs to stay independent and have a good quality of life.

We created Kidney Beam to offer exercise and lifestyle support for all people living with CKD, just like Mrudula.

Meet Mrudula

Photo of Katie Bell and Sharlene Greenwood, co-founders of Kidney Beam

Our story

While there is no cure, helping people with kidney disease to increase their physical activity levels and improve their lifestyles can have a big impact on health outcomes.

That is why co-founders Katie Bell, a tech entrepreneur, and Professor Sharlene Greenwood, a consultant physiotherapist and exercise professor, came together to create Kidney Beam.

Launched in the midst of the Covid-19 pandemic - which significantly affected people with kidney disease who were forced to self-isolate, leading to an increase in physical inactivity - Kidney Beam has now delivered over 25,000 online classes and is being rolled out across the UK’s NHS and internationally.

Who can access?

We are proud and humbled to have been recognised for several healthtech industry awards for our’s and our partners’ work supporting people with kidney disease and other associated conditions:

Winner - "Best Digital Health Solution" - Prix Galien Awards 2025

Winner - "Company Generating Greatest NHS Benefit" - DigitalHealth.London Accelerator

Highly Commended - "Most Effective Contribution To Improving Care For Those With Long Term Conditions"" - HSJ Partnership Awards 2026

Highly Commended - "Optimising Clinical Pathways" - HSJ Digital Awards 2025

Highly Commended - "Digital Patient Transformation - HTN Now Awards 2024/25

Finalist - "Health Tech Case Study Of The Year" - HTN Now Awards 2024/25

Finalist - "SME/Start-Up Innovation" - HTN Now Awards 2024/25

Shortlisted - “HealthTech 50 Ranking” - Business Cloud 2025