With 2 clinics located in Central London and 2 in North-West London, Dr Arun Rajendran takes pride in offering expert, friendly, and effective care for a comprehensive range of conditions affecting the gullet, stomach, colon, and liver.
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London clinic and Onewelbeck
BMI The Clementine Churchill Hospital
OSD Healthcare
GORD is common — but persistent symptoms deserve expert attention. Dr Arun Rajendran provides personalised diagnosis and treatment at four private clinics across London.
Specialist gastroenterologist, London.
Patient Reviews.
Compassionate Specialist Care
Gastroenterology London
GORD is a chronic condition in which stomach acid repeatedly flows back into the food pipe (oesophagus), irritating its lining. This leads to acid reflux symptoms, such as heartburn, chest pain, and regurgitation of food or acid. It occurs when the lower oesophageal sphincter (LOS) weakens or relaxes at the wrong time. Occasional reflux is normal — GORD is diagnosed when symptoms occur two or more times a week and begin to affect daily life.
Affects 1 in 5 adults in the UK at some point in their lives, with symptoms such as heartburn and acid regurgitation.
Diagnosed when acid reflux occurs two or more times per week.
Left untreated, GORD can lead to oesophagitis, Barrett's oesophagus, and other complications.
With the right treatment, most patients experience significant improvement in symptoms and quality of life
The primary cause is a weakened lower oesophageal sphincter.
Several other factors can trigger or worsen the condition.
Part of the stomach pushes upward through the diaphragm, weakening the sphincter valve.
Hormonal changes and increased abdominal pressure make reflux far more common during pregnancy.
Spicy foods, chocolate, alcohol, caffeine, and large meals all aggravate gastroesophageal reflux symptoms.
Nicotine weakens the lower oesophageal sphincter and reduces saliva production, which would otherwise neutralise acid.
Excess abdominal fat increases pressure on the stomach, pushing acid upwards into the food pipe.
Certain medicines — including NSAIDs, aspirin, and some blood pressure drugs — can trigger or worsen GORD.
Typical reflux symptoms without visible damage to the oesophageal lining on endoscopy.
Stomach acid has caused visible inflammation and erosions in the lining of the oesophagus.
It is often referred to as ‘silent reflux’. It occurs when stomach acid reaches the throat without obvious heartburn.
Advanced GORD that has led to complications such as Barrett's oesophagus or oesophageal stricture.
Acid reflux occurring alongside a hiatus hernia, which requires tailored management and monitoring.
Symptoms range from obvious to surprisingly subtle. If any of the following feel familiar, specialist assessment is worthwhile.
A burning sensation in the chest, usually after eating or when lying down
Acid or undigested food rising into the throat or mouth
A pressing or burning pain in the chest that can mimic cardiac symptoms
A feeling of fullness, bloating, or queasiness, particularly after meals
In more severe cases, reflux may cause vomiting, especially in the morning
Inflammation of the oesophagus, making it harder to pass food or liquids
Persistent heartburn and acid reflux deserve specialist attention — not just antacids.
An accurate diagnosis is the essential first step. Many reflux symptoms overlap with other conditions, so specialist investigation matters.
Dr Rajendran will begin with a thorough review of your symptoms, diet, lifestyle, and medical background to build a complete clinical picture.
A thin, flexible camera is gently passed into the oesophagus and stomach to look for inflammation, erosions, or Barrett's oesophagus.
Gold-standard testing to measure acid and non-acid reflux over a full day.
Measures the pressure and function of oesophageal muscles and sphincter.
Used where needed to detect structural issues such as hiatus hernia or stricture.
Every treatment plan is tailored to the individual — from simple medication to advanced endoscopic procedures.
Medication can help reduce acid irritation, ease reflux symptoms, and support healing of the oesophagus.
Minimally invasive procedures may help improve the barrier between the stomach and oesophagus to reduce reflux.
Surgery may be considered for long-term reflux control by helping prevent stomach acid from flowing back.
Ongoing monitoring, lifestyle support, and follow-up care help manage symptoms and reduce the risk of complications.
Every treatment plan is tailored to the individual — from simple medication to advanced endoscopic procedures.
Eat smaller portions more frequently
Limit citrus, tomatoes, chocolate, and spicy foods
Include oatmeal, bananas, and leafy greens
Avoid alcohol and caffeine where possible
Finish eating at least 3 hours before bed
Manage stress — a known trigger for gastroesophageal reflux symptoms
Take gentle, regular exercise (walking, swimming)
Keep a food and symptom diary to spot triggers
Review any medicines that may worsen reflux with your doctor
Maintain a healthy weight — even modest loss helps
Stop smoking
Stay upright for 2–3 hours after eating
Raise the head of your bed for night-time symptoms
Wear loose clothing around the waist
With over a decade of experience, Dr Arun provides expert, friendly gastro care, listening carefully and offering personalised attention because you deserve more than a rushed appointment.
Thorough investigation before treatment, with a clear explanation in plain English.
Every plan is built around your specific diagnosis and lifestyle, not a generic protocol.
Continued follow-up, flare-up management, and access to a wider specialist network across London.
Conveniently located across central and south London, often available within days.
Thousands of patients across London and the UK have trusted
Dr Arun Rajendran to get to the bottom of their digestive symptoms.
We are a self-pay clinic but also accept all major UK healthcare insurance providers.
Our London Clinic Locations
20 Devonshire Place, London, W1G 6BW (Wed: 17:45 – 19:30).
Welbeck Street, London, W1G 0AR (Mon: 18:00 – 20:00).
Sudbury Hill, Harrow, HA1 3RX
(Tue 18:00–20:00 · Alt Sat 08:30–10:30).
One Medical House, Hemel Hempstead, HP2 7YU
(Saturday: 09:00 – 11:00).