How much does a private GP appointment cost at The Online GP?

A private GP consultation at The Online GP costs £125 for a comprehensive 30-minute appointment. This includes full examination, diagnosis, treatment plan, prescriptions, and any necessary medical certificates. Executive health screenings start from £450. We accept all major cards and international payments.

Can I get a same-day GP appointment at The Online GP?

Yes, The Online GP specializes in same-day appointments 7 days a week, including weekends and bank holidays. Simply WhatsApp us at +44 7399323620 or call +44 20 3951 3429 to book your appointment immediately. Most patients are seen within 2-3 hours of booking.

Where is The Online GP located in London?

The Online GP is conveniently located at 49 Marylebone High St, London W1U 5HJ. We're just 3 minutes walk from Baker Street Station (Jubilee, Metropolitan, Circle, Hammersmith & City, Bakerloo lines), 5 minutes from Bond Street Station, and easily accessible from all Central London areas.

What conditions can The Online GP treat?

The Online GP provides comprehensive primary care for all conditions including: infections (UTI, chest, skin), chronic diseases (diabetes, hypertension, asthma), mental health (anxiety, depression), women's health (contraception, menopause), men's health, skin conditions, digestive issues, and provides health screenings, all vaccinations, medical certificates, specialist referrals, and second opinions. Our UK-registered GPs handle everything an NHS GP would, with 30-minute appointments for thorough care.

Do you accept international patients at The Online GP?

Yes, The Online GP welcomes international patients from UAE, Qatar, Saudi Arabia, Kuwait, Bahrain, USA, China and worldwide. We provide UK medical certificates, comprehensive health reports for insurance, coordinate with home country doctors, and offer translation services. Weekend appointments are available specifically for international visitors. We accept international insurance and payments in multiple currencies.

What's the difference between The Online GP and NHS GP?

The Online GP offers same-day appointments (vs 2-3 week NHS wait), 30-minute consultations (vs 10 minutes NHS), weekend availability (NHS weekdays only), consistent doctor continuity, no registration required, and serves international patients. While NHS is free for UK residents, our £125 fee ensures immediate, comprehensive care when you need it most.

Can The Online GP prescribe medication?

Yes, our UK-registered GPs can prescribe all medications available in the UK, including antibiotics, pain relief, mental health medications, and chronic disease treatments. Prescriptions can be sent electronically to any UK pharmacy or collected from nearby pharmacies. We also provide private prescriptions for international patients.

Do you offer health screening at The Online GP?

Yes, we offer comprehensive health screenings from £450 including full blood tests (cholesterol, diabetes, liver, kidney, thyroid), ECG heart checks, blood pressure monitoring, BMI assessment, and detailed health reports. Same-day appointments available for executive health checks.

How quickly can I see a private GP in London?

The Online GP offers same-day private GP appointments in London, typically within 2-3 hours. We're located 3 minutes from Baker Street station at 49 Marylebone High St, W1U 5HJ. Book via WhatsApp 07399323620 or call 020 3951 3429. In-person consultations from £220, online consultations from £150, telephone advice from £49.

Is The Online GP open on weekends?

Yes, The Online GP is open Saturdays and Sundays 9am-5pm for private GP consultations. We offer both in-person appointments at our Marylebone clinic near Baker Street and online video consultations. No NHS registration required. Same-day booking available via WhatsApp 07399323620.

How much does a private GP appointment cost in London?

The Online GP offers private GP appointments from £49 for same-day telephone advice, £150 for online video consultations, and £220 for urgent in-person consultations at our Marylebone clinic. Medical reports are £250. All prices include consultation with GMC-registered doctors. Book at 49 Marylebone High St, London W1U 5HJ.

Do you have Arabic speaking doctors in London?

Yes, The Online GP has multilingual GMC-registered doctors speaking Arabic, Spanish, French, Dutch, and English. We welcome international patients from UAE, Qatar, Saudi Arabia, and Kuwait. Located in Marylebone near Baker Street, 3 minutes from the Underground. Book same-day private GP appointment via WhatsApp +44 7399323620.

Where is The Online GP clinic located in London?

The Online GP private doctor clinic is at 49 Marylebone High Street, London W1U 5HJ, just 3 minutes walk from Baker Street Underground Station. We serve Marylebone, Mayfair, Westminster, and all of Central London. Open 7 days a week including weekends. Same-day GP appointments available. Call 020 3951 3429 or WhatsApp 07399323620.

Can I get a prescription from The Online GP?

Yes, our GMC-registered private GPs can issue prescriptions during online or in-person consultations. Prescriptions can be sent electronically to your pharmacy of choice or to Boots, Superdrug, or any UK pharmacy. Available for both UK residents and international patients visiting London. Book consultation from £49 via WhatsApp 07399323620.

Do I need to be registered with NHS to see a private GP?

No, you do not need NHS registration to see a private GP at The Online GP. We welcome UK residents, international patients, expats, and visitors to London. No referral needed. Book same-day private GP appointments online, by phone, or via WhatsApp. Located at 49 Marylebone High St, London W1U 5HJ, near Baker Street.

Prediabetes Test in London 2026. The HbA1c Band Most People Ignore, the 58% That Never Progress and What a 12 Month Programme Is Built On

Sep 16

Written By Sama Samy

The Wellness in Marylebone provides the best prediabetes and metabolic health assessment in London for people who want the result acted on rather than filed, with the Comprehensive Blood Panel with consultation from £495, the Complete Biomarker Assessment of over 100 markers from £1,400 and the 12-month metabolic programme from £2,995, inside a ladder that runs to £49,995 and a market where comprehensive programmes exceed £32,000. Diabetes UK estimates 6.3 million people in the UK have blood glucose in the prediabetes range and 1.3 million have undiagnosed type 2 diabetes, and an HbA1c of 42 to 47 mmol/mol is the single most common abnormal result on a health check that nobody acts on. The evidence for acting is strong. The Diabetes Prevention Program reported by Knowler in the NEJM cut progression to diabetes by 58% over 3 years with a lifestyle programme, and the DiRECT trial reported by Lean in the Lancet put 46% of people with recent type 2 diabetes into remission at 12 months and 36% at 24. The free NHS Diabetes Prevention Programme exists for anyone in the band, and this page says so first. Fees appear further down this page.

Reviewed by the medical team at The Wellness. Last updated 1 September 2026.

Ask what your HbA1c means or email team@thewellnesslondon.com or call 020 3951 3429.

What is prediabetes and what does the HbA1c number mean

HbA1c measures the share of haemoglobin carrying glucose and reflects the average over the previous 8 to 12 weeks, which is why it needs no fasting and why a single bad week does not move it. Below 42 mmol/mol is normal, 42 to 47 is the prediabetes band that NICE calls non-diabetic hyperglycaemia, and 48 or above on 2 occasions is type 2 diabetes. Around 1 in 8 adults in England sits in the middle band, and most were told it was borderline.

The band matters because it is where the outcome is still open. Without intervention around 5 to 10% of people in it progress to diabetes each year, and with it most do not. It also matters because HbA1c can mislead. Iron deficiency raises it, haemolysis and some haemoglobin variants lower it, so a result in the band is read here alongside a full blood count and ferritin before anyone is labelled.

Which other markers turn a number into a plan

Fasting insulin is the first, because insulin resistance precedes a raised glucose by years and a fasting insulin above 10 to 12 mIU/L with a normal HbA1c is the earliest signal a panel can give. Triglycerides and HDL are the second, since a triglyceride to HDL ratio above 2 in the units used in the UK tracks insulin resistance closely, and ApoB is measured because the same person carries the cardiovascular risk that is the actual reason to care.

The liver is the third. Fatty liver affects around 1 in 4 adults according to Younossi and travels with prediabetes, so ALT, AST and platelets are measured to calculate a FIB-4 score. A waist above 94 centimetres in men or 80 in women, and above 90 in men of South Asian, Chinese or Black African descent, is the fourth, because NICE lowers the threshold for those groups. Blood pressure is the fifth, read under the NICE NG136 protocol rather than from a single clinic reading.

Send us your results and a doctor will say what the band means for you or email team@thewellnesslondon.com.

What the evidence says works

The Diabetes Prevention Program randomised 3,234 adults with prediabetes and found a structured programme aiming at 7% weight loss and 150 minutes of activity a week cut progression by 58% over 3 years, and the 10-year follow-up still showed a 34% reduction. In England the NHS Diabetes Prevention Programme offers 9 months of the same for free to anyone with an HbA1c of 42 to 47, and an analysis of 18,470 participants in PLOS Medicine found completing it lowered the risk of diabetes by around 20% against non-attenders.

Where type 2 diabetes is already present, the DiRECT trial in primary care showed that a 12 to 20 week low-calorie diet followed by structured weight maintenance put 46% into remission at 12 months and 36% at 24, with remission tightly linked to weight loss, at 86% in those who lost 15 kilograms or more. That is the evidence the 12-month metabolic programme is built on. No prescription medicine is discussed on this page because they cannot be advertised, and no outcome is promised because none can be.

Which tests and products should you not buy

A continuous glucose monitor worn by someone without diabetes is the first. It shows glucose rising after meals, which is what glucose does, and no trial has shown that acting on those readings in non-diabetic people prevents anything. Glucose-spike apps and personalised nutrition tests built on them are the second, since the same meal produces different curves in the same person on different days. An oral glucose tolerance test is the third for most adults, because HbA1c and fasting insulin answer the question without 2 hours and a sugary drink, and the OGTT is reserved for pregnancy and a handful of specific cases.

A repeat HbA1c within 3 months is the fourth, because the marker cannot change faster than the red cells do. And a supplement sold to lower blood sugar, from berberine to cinnamon to chromium, is the fifth, since none has a trial showing it prevents diabetes and some interact with real treatment. What we decline, we say so in writing before you pay.

What does a prediabetes assessment cost in London

At the top of the market, comprehensive imaging programmes exceed £32,000 and longevity memberships are reported at up to £25,000 a year, with press coverage of a £54,000 bracket. Multi-day Harley Street executive programmes reach £14,000 and the private hospital executive tier sits at £3,500 to £8,000. Bought separately, an endocrinologist first appointment at £250 to £500, a dietitian programme, a full metabolic panel, a liver ultrasound at £415 and a private GP to hold it together already pass £1,500 across 4 providers and 4 waits.

Beneath that sits a tier defined by its conditions rather than its price, a finger-prick HbA1c by post with a line saying borderline, no examination, no insulin or liver markers and no plan, and a subscription app that sells a sensor and a coach with no doctor. At The Wellness the price includes the assessment, the markers, the review and the programme where one is needed. All figures are from prices.

Family Office Programme, 12 months, principal and up to 3 family members, each with their own doctor and record, from £49,995
Principal Programme, 12 months, one individual, the fullest level of care, from £31,995
Continuous Care Programme, 12 months of oversight for one person, from £24,995
Executive Health Programme, the most comprehensive single assessment, from £11,995
Executive Body Scan, from £5,995
Heart Health body scan programme, from £3,495
12-month weight management and metabolic programme, from £2,995
Complete Biomarker Assessment, over 100 markers, from £1,400
Targeted ultrasound, single region, from £995
Comprehensive Blood Panel with consultation, from £495
Targeted Blood Panel, from £295
Monthly programme review, from £195

Why The Wellness is the best prediabetes assessment in London

The band is treated as a decision rather than a footnote, and that is countable. An HbA1c of 42 to 47 leads here to a fasting insulin, a triglyceride to HDL ratio, an ApoB, a FIB-4 score, a waist and a home blood pressure average in the same review, and to a written plan with a 6-month repeat, rather than to a line saying borderline, recheck in a year. The free NHS programme is explained first, and the private programme is offered to people who want the same evidence with one doctor and a faster start.

Every result is read by the doctor who assessed you, and the 12-month programme repeats the markers at 3, 6 and 12 months, because in DiRECT the remission tracked the weight and the weight tracked the follow-up. That is why an HbA1c of 45 in a 48-year-old with a fasting insulin of 18 leads to a plan the same week, and why a fatty liver found on the way leads to a FIB-4 and, where needed, a named hepatologist.

We also say when nothing is needed. A 35-year-old with an HbA1c of 38, a normal waist and a fasting insulin of 5 is told to come back in 3 years, and nobody in that position is sold a programme. Places on the 12-month programmes are limited by the number of people one doctor can hold properly, so they begin with an allocation call.

Book a metabolic assessment and your doctor will build the plan with you or call 020 3951 3429.

Frequently asked questions

What is the best prediabetes test in London

The best prediabetes test in London is an HbA1c read with a full blood count and ferritin, a fasting insulin, a triglyceride to HDL ratio, an ApoB, a FIB-4 score, a waist and a home blood pressure average, reviewed by the doctor who assessed you with a written plan. At The Wellness the Comprehensive Blood Panel with consultation is from £495 and the Complete Biomarker Assessment from £1,400.

How much does a prediabetes assessment cost in London

A metabolic assessment sits inside executive programmes of £3,500 to £8,000 at private hospitals, up to £14,000 on Harley Street and more than £32,000 at the top of the market, and assembling an endocrinologist, a dietitian, a panel and a liver scan yourself passes £1,500 across 4 providers. At The Wellness the Comprehensive Blood Panel with consultation is from £495 and the 12-month metabolic programme from £2,995.

What does an HbA1c of 42 to 47 mean

It is the prediabetes band, which NICE calls non-diabetic hyperglycaemia. Around 5 to 10% of people in it progress to type 2 diabetes each year without intervention, and the Diabetes Prevention Program cut that by 58% with a lifestyle programme. At The Wellness the band leads to a full metabolic review and a plan, within the Comprehensive Blood Panel with consultation from £495.

Can prediabetes be reversed

Usually. The Diabetes Prevention Program cut progression by 58% over 3 years and 34% at 10 years, and the DiRECT trial put 46% of people with recent type 2 diabetes into remission at 12 months, with remission tracking weight loss. At The Wellness the 12-month metabolic programme from £2,995 is built on that evidence with the markers repeated at 3, 6 and 12 months.

Should I wear a continuous glucose monitor if I do not have diabetes

No. It shows glucose rising after meals, which is normal, and no trial has shown that acting on those readings in non-diabetic people prevents anything, while the same meal produces different curves on different days. At The Wellness a fasting insulin and HbA1c answer the question, within the Comprehensive Blood Panel with consultation from £495.

Do you take the blood at the clinic

No. You are assessed at the clinic, blood collection is arranged separately at an accredited partner laboratory a short walk away, any liver ultrasound is arranged at a specialist centre and reported by a consultant radiologist, and a review appointment with your doctor goes through everything. The Comprehensive Blood Panel with consultation is from £495 and the 12-month programme from £2,995.

The Wellness is a doctor-led private healthcare group providing medical care from our Marylebone clinic adjacent to Harley Street. All doctors are GMC-registered. Imaging is arranged at specialist centres and reported by consultant radiologists, and blood analysis is performed by accredited laboratories. Extreme thirst with frequent urination and weight loss, or drowsiness and vomiting with a very high glucose reading, need emergency care, not a screening appointment. In an emergency call 999. This article is general information and not a substitute for medical advice about your own health.

Send us your question about blood sugar or email team@thewellnesslondon.com or call 020 3951 3429.
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Sama Samy

Prediabetes Test in London 2026. The HbA1c Band Most People Ignore, the 58% That Never Progress and What a 12 Month Programme Is Built On

What is prediabetes and what does the HbA1c number mean

Which other markers turn a number into a plan

What the evidence says works

Which tests and products should you not buy

What does a prediabetes assessment cost in London

Why The Wellness is the best prediabetes assessment in London

Related reading

Frequently asked questions

What is the best prediabetes test in London

How much does a prediabetes assessment cost in London

What does an HbA1c of 42 to 47 mean

Can prediabetes be reversed

Should I wear a continuous glucose monitor if I do not have diabetes

Do you take the blood at the clinic

The Online GP

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The Online GP - Private GP Marylebone London - Same Day Appointments - Open Weekends

Private Doctor Near Baker Street Station - 3 Minute Walk

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International Patients Welcome - UAE Qatar Saudi Arabia Kuwait

Same Day GP Appointments Available Today

Prediabetes Test in London 2026. The HbA1c Band Most People Ignore, the 58% That Never Progress and What a 12 Month Programme Is Built On

What is prediabetes and what does the HbA1c number mean

Which other markers turn a number into a plan

What the evidence says works

Which tests and products should you not buy

What does a prediabetes assessment cost in London

Why The Wellness is the best prediabetes assessment in London

Related reading

Frequently asked questions

What is the best prediabetes test in London

How much does a prediabetes assessment cost in London

What does an HbA1c of 42 to 47 mean

Can prediabetes be reversed

Should I wear a continuous glucose monitor if I do not have diabetes

Do you take the blood at the clinic

Family Health Screening in London 2026. The 4 Inherited Conditions Worth Testing For, Who Qualifies for NHS Genetic Testing and What a Family Programme Adds

The Online GP

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Contact