Performance Nutrition Clinic 

Over the last decade, we’ve worked with a wide range of clients in our clinics, from elite athletes, headline musicians through to FTSE 100 executives – to improve their wellbeing and performance. 


Our performance nutrition clinic is led by James Collins and offers three individualised programmes, depending on your needs, from our Harley Street practice. 


These range from our intensive in-person programme for support towards an event or challenge (e.g. sporting / music event, physical challenge or wellbeing goal) through to intensive remote programme for those with an intense travel schedule or living outside of the UK. Finally our maintenance programme provides lighter-touch support for our longer-term clients. 

Our elite football clinic is led by Andreas Kasper. For the first time our strategies from working with organisations such as; Arsenal FC, Chelsea FC, England and France national teams, are available for players based internationally. 

Through this remote programme we build bespoke plans to meet players individual training and match demands. The clinic also provides technical support to staff from clubs and federations to integrate nutrition systems within their current performance services. 

Body composition assessment using a DEXA scan (gold-standard) or anthropometry (skinfolds) is available as required, alongside other physiological testing services. 

Within elite sport we work closely as a support team around an athlete to provide the best possible care – and we mirror this process for all clients within our private practice.

All of our programmes are carefully curated for long-term change. We pride ourselves on providing a discreet, premium, service and as such we maintain a small, carefully managed, caseload. 


For further information, please contact

Team Services 

The importance of an experienced Performance Nutritionist has grown within elite sport in recent years and is now seen as a crucial part of each elite team or association. 


At Intra we work with each organisation to undertake a full needs analysis to determine the right practitioner skill-set and cultural fit, for the organisation. Our team are recognised as industry leaders having worked extensively with; Chelsea FC, Arsenal FC, the England and France national football teams as well as Team GB Olympic programmes, including Athletics, Judo and Canoeing. 


Our service model ensures the performance nutritionist is fully integrated within the support team, working closely with the coaching and science and medicine support team, to influence and support each department. 


We develop a performance nutrition pathway at the organisation, to ensure consistent messaging, delivery and learning outcomes, from junior (academy) athletes through to senior internationals.


Finally, the performance nutrition service is a strategic approach which includes in-depth work with athletes and staff, whilst also shaping the training centre environment, to build a ‘performance nutrition culture’ long-term across the organisation. 


For further information, please contact

We work within organisations to understand their needs, engage talent, and drive long-term health and performance outcomes. 

Contact Us

To speak to one of our team regarding services or media requests,

please contact us on: 

Intra Performance Group

71 Central Street, Clerkenwell, London, EC1V 8AB


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