Live and breathe a healthy lifestyle.

We believe in empowering everyone to embrace a healthy way of living through the food we enjoy and the life we lead. Our bodies really are as unique as our personalities, so each of us should strive to find a way of eating that works for us individually.

London’s leading clinic and consultancy

Founded by one of the UK’s leading nutritionists Rhiannon Lambert, Rhitrition is a renowned clinic specialising in weight management, sports nutrition, eating disorders, women’s health, paediatrics and pre- and post-natal nutrition. Our highly qualified, experienced and professional team of Registered Nutritionists, dietitian’s and chartered psychologists work with individuals to transform their lives.

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“Our bodies really are as unique as our personalities, so each of us should strive to find a way of eating that works for us individually.”

— Rhiannon Lambert

Science-first approach

As an evidence-based practitioner, Rhiannon is committed to the benefits of a scientific approach to nutrition. She has worked as a consultant to many well-known food brands including Deliveroo, Wagamama, Alpro, Yeo Valley, Tropicana and Little Freddie, refining their menus, product ranges, and cooking methodology. Rhiannon has also advised on nutrition and wellbeing at Six Senses, Four Seasons Hotels & Resorts, Microsoft, Samsung, and Coty.

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What our clients say

Thank you for sorting my consultation with Amelia. I didn't know what to expect but was pleasantly surprised and impressed with the whole experience. Amelia really knows her stuff and explained everything so that I understood ( which is not easy with me). So glad my lovely daughter put me in touch with you.”

Terry.

I have wanted to see a nutritionist for a while but felt nervous about it, worried I would feel judged about my weight or my relationship with food. But Cecilia was fantastic. She put me at ease from the start. She listened with compassion and an open mind, and helped me to feel empowered to make good food choices for my weight and my health. She was so easy to talk to. I am so pleased I did this, and would recommend Cecilia to anyone!”

Hannah.

We recognise one approach doesn't suit everyone

You needn’t be worried about hard-to-commit-to and complicated plans, we firmly believe that getting back to basics and keeping nutrition simple is the easiest way to maintain a healthy body.

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Events diary

Throughout the year, we host and partake in a number of events.
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Here is what we have coming up in 2024:

For one night only, The Wellness Scoop podcast comes to life at Cadogan Hall, bringing the most talked-about wellness trends, expert knowledge, and personal recommendations straight to the stage. Expect an evening packed with eye-opening discussions, real-world solutions, and the chance to ask your questions in a live Q&A.

Join Rhiannon at BBC Good Food Festival 2025 for a cooking demonstration, showcasing a delicious meal from her brand new book, The Unprocessed Plate, followed by a book signing.

Bestselling author and industry-leading nutritionist Rhiannon Lambert will be returning to Chorleywood, this time to chat about her brand new book The Unprocessed Plate: Simple, Flavourful UPF-free Recipes to Transform Your Life.
The food and nutrition world is abuzz with UPFs: what it is, the ways in which it’s impacting our health, and how best to avoid it. Join Rhiannon as she answers the biggest questions surrounding UPFs, explaining the nuances and contradictions, while sharing 60 minimally processed, family-friendly recipes.
With ideas for nutritious breakfasts, on-the-go lunches, and weeknight meals, as well as inspiration for easy swaps for snacks and store cupboard essentials, The Unprocessed Plate offers solutions to our over reliance on unhealthy convenience food.

Join Registered Nutritionist Rhiannon Lambert as a featured guest at Chewton Glen’s wellness retreat, where she will be leading a cookery class on the 6th July. Join her for an enlightening cookery masterclass, unwind with restorative spa sessions, and embrace the tranquillity of our estate - an unmissable opportunity to rejuvenate, reconnect, and realign.

The BlackBox Nutrition Conference aims to ‘lift the lid’ on these systems by creating a forum where experienced practitioners openly share their implementation methods, challenges faced, and lessons learned in real-world settings.