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The Practice Team

Ruth Gretton - Practice Manager

Ruth Gretton

Practice Manager

Ruth qualified as a Registered Nurse at the Bath School of Nursing in 1980 before working in the NHS at St Martin’s Hospital in Bath in acute medical care for older people where she was promoted to Ward Sister.

Further qualifications followed with a Diploma in Nursing (Distinction) from the University of London in 1995 and a BSC Hons in Specialist Palliative Care from the University of West of England in 2008.

From 2004 Ruth worked at Dorothy House Hospice near Bath as Ward Sister of the Inpatient Unit until her retirement in 2020 as Director of Patient and Family Services.

Throughout her nursing career, Ruth cared for patients experiencing the life-changing impact of chronic ill health. It, therefore, seemed fitting to her that she came out of retirement to work on the creation of the Combe Grove Metabolic Health Retreat, a proactive way to help people improve personal metabolic health thereby reducing the risk of developing life limiting metabolic diseases.



Oli Pratt - Nutritionist

Oliver Pratt 

Nutritional Therapist

Oli has been practising combined healing for over thirty years following his journey to a more holistic way of life after a virus in his late teens impacted his own physical and mental health. A qualified Nutritionist, Mindfulness Meditation Teacher, Reiki Master, mBIT Coach and Master Practitioner of Neuro-Linguistic Programming (NLP), Oli uses his unique combination of skills, knowledge, and life experience to help support others to make meaningful and sustainable changes to find their best health and wellbeing. 

A strong advocate of the Combe Grove Food Ethos, Oli was the pioneering Executive Chef for Bristol’s iconic Watershed, developing and delivering The Plot to Plate Ethos and transforming the catering operation with ethically sourced, nutrient dense, food at a commercial level. Today Oli uses his love of fresh, locally sourced ingredients and culinary skills as an important element in providing nutritional health to his clients.

In his private practice and at Combe Grove Oli works on the basis that we are all individual and unique and therefore require individual protocols, plans and tools based on the Five Roots of Metabolic Health to facilitate personal change.

Rebecca Hiscutt - Nutritionist

Rebecca Hiscutt


Rebecca has worked in nutrition for 20 years since graduating from the University of Surrey with a 1st class degree in nutrition and dietetics. She began her career as a research dietitian investigating five popular weight loss diets. Over 6 months Rebecca helped to support 300 people to make significant lifestyle changes and improve their metabolic health.

Rebecca continued researching the effects of nutrition on metabolic health during her doctoral research investigating the effects of low carbohydrate diets on cardiovascular risk factors. Throughout her PhD, Rebecca was a partner in a private dietetic practice providing personalised nutrition advice to help people with metabolic syndrome, gastrointestinal conditions and weight loss.

Rebecca has also worked as an obesity specialist dietitian for the charity Weight Concerns and had dietetic roles in both NHS and private hospitals.

For the past 8 years, Rebecca has run a nutrition and wellbeing company to help people discover how to use food to enable them to thrive. This has involved running nutrition, yoga and mindfulness retreats, providing nutrition coaching to individuals and running nutrition training sessions for organisations.