Rhitrition is founded by internationally acclaimed Soprano & Registered Nutritionist Rhiannon Lambert.


After achieving a 1st Class BSc (Hons) in Nutrition & Health, A Masters Degree in Obesity & Eating Disorders, a Diploma in Nutritional Therapy and a certificate from ION for Nutritional Approaches to Eating Disorders and Eating Distress, Rhiannon has built upon a wealth of knowledge having worked as Nutritionist at a number of London’s most renowned eateries, health boutiques and NHS Hospitals.

Much of Rhiannon’s research and practice centers on Eating Disorders and Weight Management.  She also has a keen interest in Sports Science and Childhood Nutrition. Rhiannon Currently works in Harley Street at The ROC Private Health Clinic & The Food Doctor Clinic.


As a professional Soprano trained at the Royal Academy of Music, Rhiannon learned the importance of living a healthy lifestyle from an early age. Her belief that Nutrition can play a significant role in your overall wellbeing and appearance has been tested performing around the world.

Good nutrition is absolutely essential for good health. Rhiannon believes the food that you eat can be the difference between feeling merely okay and feeling on top of the world both mentally and physically.

Rhiannon has obtained a Masters degree in Weight Management and Obesity,a short course from The Institute for Optimum Nnutrition for Nutritional Approaches to Eating Disorders and Eating Distress, in addition to a First Class Honours degree in Nutrition and Health.

Her experience working alongside Cardiologists and General Practitioners at NHS Hospitals has demonstrated the influence Nutrition can play in recovery, particularly in metabolic syndromes. Many conditions are a sign that your body is not working to its full potential.

Whether you’re striving to lose, gain or maintain weight, Rhiannon can set you on the right track and monitor your progress. Ultimately, she can show you how to live a healthy lifestyle without compromise.

As an avid foodie, Rhiannon has been fortunate enough to experiment with colourful ingredients working with Masterchef’s Gregg Wallace and be responsible for creating menus at some of London’s most renowned healthy eateries.

With food and fitness working hand in hand to keep us in peak condition, Rhiannon’s personal training experiences has seen her work with Olympic athletes and witness the dramatic impact healthy eating can have on performance at the highest level.

It is also her belief that a nutritious diet significantly increases a child’s chances of a healthy life kick starting their cognitive development. Eating right is so important through the early years of weaning, infancy and childhood.

Rhiannon is registered with the Association for Nutrition (AFN) and acts as Nutritional Consultant for companies including The Food Doctor, Danone and Creative Nature Superfoods. She is often seen quoted in the press including BBC and The Sunday Times.

Rhiannon is Registered to the Association For Nutrition

Rhiannon is Registered to the Association For Nutrition

The best nutritionist in town, I can't recommend her enough!

- Rhiannon is the nutritionist for the gorgeous family of Daniella Semaan & Cesc Fabregas.

"I have known Rhiannon professionally and personally for just over 2 years. Quite simply, she is bright, charming and clever. I look forward very much to working with her again."

- Gregg Wallace, Masterchef


Latest From The Blog

The Clean Eating Myth

This article was brought to my attention in 👌🏻 My views. 🍏 The hashtag ‪#‎eatclean‬ , if used correctly,...

Read More

Dangers Of The Insta-Diet

My Latest Article In Britain’s Biggest Selling Women’s Magazine: TAKE A BREAK Is social media...

Read More