Harley Street Medical District · Central London & St Albans · 7 days a week
A private Holter monitor (ambulatory ECG) at London Private Ultrasound starts at £449 with a free ECG included. Record your heart rhythm continuously over 3, 5 or 7 days while you carry on as normal. Every recording is reviewed by a GMC-registered cardiologist. No GP referral needed.
If you get palpitations, dizziness, an irregular heartbeat or blackouts that a standard resting ECG never seems to catch, a Holter monitor records every heartbeat for days at a time, so an intermittent rhythm problem has far more chance of being caught and explained.
| Price | From £449 (3-day) · £549 (5-day) · £649 (7-day) · free ECG included |
|---|---|
| Full package | Monitoring + cardiology consultation + echocardiogram from £599 |
| Recording options | 3, 5 or 7-day continuous ambulatory ECG |
| What it shows | Atrial fibrillation · ectopics (SVE) · SVT · pauses · slow or fast heart rate · heart block |
| Fitting time | About 15 minutes · then worn during normal activity |
| Who reports it | GMC-registered cardiologist |
| GP referral | Not required — book directly |
| Locations | 27 Welbeck Street, Central London W1G 8EN · 54–56 Victoria Street, St Albans AL1 3HZ |
| Results | Cardiologist-reviewed written report, usually within a few working days |
| Availability | 7 days a week, 9am–7pm · fitting often available within days |
Both packages include continuous ambulatory ECG monitoring, a free ECG and a cardiologist-reviewed report. Pick the recording length that matches how often your symptoms happen — you choose the exact duration in the booking calendar.
Continuous ambulatory ECG recording and cardiologist rhythm review.
Select 3, 5 or 7 days in the calendar
Rhythm, symptoms and heart structure assessed together, with a cardiologist.
Select 3, 5 or 7 days in the calendar
| Package | 3 days | 5 days | 7 days |
|---|---|---|---|
| Holter monitoring | £449 | £549 | £649 |
| Monitoring + cardiology consultation + echocardiogram | £599 | £699 | £799 |
A free ECG is included with every Holter monitoring package. You choose the exact recording length and package when you reach the booking calendar below.
Not sure which to choose? Call 020 7101 3377 and our team will help you pick the right recording length and package for your symptoms.
Holter Monitor Preparation: Please ensure that your chest is clean, dry and shaved before attending your appointment. This helps the electrodes adhere securely and ensures accurate monitoring.
Choose your preferred monitoring period and find the next available appointment. No GP referral is required.
Our team can help you choose the most appropriate monitoring period based on how frequently you experience symptoms.
A Holter monitor is a small, portable ECG recorder worn on the chest. Unlike a resting ECG that captures a few seconds, it records every heartbeat for days, so it catches rhythm problems that come and go.
A few small electrodes on the chest connect to a lightweight recorder worn on a belt clip or waist strap.
The recording is analysed for the rhythm disturbances a single ECG most often misses.
A GMC-registered cardiologist reviews your recording alongside your symptom diary and writes a clear report.
Holter vs a single ECG. A resting ECG is a snapshot; a Holter monitor is a diary. If your palpitations, dizziness or blackouts come and go, days of continuous recording give a far better chance of catching the moment your symptoms happen and linking them to what your heart is actually doing.
A single ECG only captures the few seconds you’re in the clinic. When symptoms are intermittent, ambulatory monitoring over several days is the test that actually catches what’s happening, and links it to how you felt at the time.
Holter monitoring is the right next step when these come and go rather than being constant.
Days of recording help your cardiologist pin down the cause, or provide reassurance.
It’s also used to keep an eye on a known problem or check that treatment is working.
When not to wait for a monitor. A Holter monitor investigates symptoms that come and go — it is not for an emergency. If you have current chest pain, severe breathlessness, a collapse, or pain spreading to the arm or jaw, call 999 or attend A&E immediately rather than booking a routine test.
Fitting is quick and painless, and you carry on with normal life — that’s the whole point of ambulatory monitoring. Here’s how to prepare, what happens on the day, and what to expect while you wear it.
A little preparation makes fitting easy and keeps the trace clean.
Fitting takes about 15 minutes and there are no needles.
Live normally — that’s exactly what the recording is meant to capture.
Risks and side effects. A Holter monitor is safe, non-invasive and low-risk. The most common issue is mild skin irritation or redness under the adhesive pads — occasionally it can look like a small patch of burn — which is temporary and settles after removal. Rarely, someone reacts to the device materials, and there is a very small chance of skin irritation or infection at an electrode site. Following the wear-and-care instructions keeps these to a minimum, and for almost everyone the value of an accurate rhythm recording clearly outweighs these minor drawbacks. Please tell us in advance about any known adhesive allergy.
Across the UK, private Holter monitor and ambulatory ECG tests typically advertise from around £250 to £800+, depending on how many days you record for and whether cardiologist review and a written report are included. Ours starts at £449 for 3-day monitoring with a free ECG and cardiologist reporting.
| Fitting of the ambulatory ECG (Holter) recorder | Included |
| Continuous 3, 5 or 7-day rhythm recording | Included |
| Free ECG | Included |
| Full analysis of the recording | Included |
| GMC-registered cardiologist review | Included |
| Written report | Included |
| GP referral letter if a finding needs onward review | Included |
| From | £449 |
A follow-up cardiology consultation is a separate appointment. If you’d like rhythm, symptoms and heart structure assessed together from the start, choose Package 2 above, which builds in a cardiology consultation and echocardiogram from £599.
NHS or private? The NHS provides Holter monitoring, but usually only after a GP or hospital referral, and fitting plus the reported result can take several weeks. Booking privately means no referral, fitting usually within days, and a cardiologist-reviewed report quickly — useful when symptoms are worrying you now.
Rhythm is one piece of the picture. These are the tests patients most often combine with ambulatory monitoring.
A quick electrical snapshot of your heart rhythm. Included free with every Holter package.
Ultrasound of the heart’s chambers, valves and pumping function. Part of the full package.
Face-to-face review of your symptoms and results with a consultant cardiologist.
A combined cardiac assessment bringing rhythm, structure and risk together.
Cholesterol, thyroid and cardiovascular risk markers, with GP review of your results.
Our full private cardiology service, from investigations to specialist review.
Two clinics, seven days a week, 9am to 7pm, with monitor fitting usually available within days. Holter monitoring from £449 with a free ECG and cardiologist reporting.
27 Welbeck Street, London W1G 8EN
Two minutes from Bond Street (Elizabeth line, Central, Jubilee), five from Oxford Circus, eight from Marylebone and Baker Street. Convenient for patients travelling in from Mayfair, Fitzrovia, Soho, the City and Paddington.
54–56 Victoria Street, St Albans AL1 3HZ
A short walk from St Albans City station, with parking nearby. Convenient for patients across Hertfordshire, North London, Watford, Hatfield, Harpenden and Welwyn Garden City.
Your Holter monitoring sits within a CQC-registered pathway, recorded and reported by clinicians on the UK’s professional registers.
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Your ambulatory ECG and Holter monitoring pathway is supported by London Private Ultrasound’s cardiology team, with rhythm review, clear reporting and onward guidance where needed.
Involved in ECG interpretation, Holter monitoring review, cardiovascular risk assessment and heart health review.
Involved in heart rhythm assessment, ECG interpretation, Holter monitoring review and cardiac assessment.
Involved in cardiac assessment, ECG interpretation, Holter monitoring review and echocardiography.
MD · MRCGP · DRCOG · overall clinical governance responsibility for the service.
Cost, the NHS, wearing the device, showering, results and more — the questions our team is asked most.
At London Private Ultrasound a private Holter monitor starts at £449 for 3-day monitoring, £549 for 5 days and £649 for 7 days, with a free ECG included.
A fuller package that adds a cardiology consultation and an echocardiogram starts at £599 (3-day), £699 (5-day) and £799 (7-day). Across the UK, private Holter and ambulatory ECG tests typically advertise from around £250 to £800+, depending on the number of days recorded and whether cardiologist review and a written report are included.
Yes. The NHS provides Holter and ambulatory ECG monitoring, but usually only after a GP or hospital referral, and waiting times for fitting and for the reported result can be several weeks.
Booking privately means no GP referral is needed, the monitor is usually fitted within days, and you receive a cardiologist-reviewed report quickly.
Our shortest package is 3-day (72-hour) monitoring at £449 with a free ECG, because a longer recording captures far more than a single 24-hour window and gives a better chance of catching intermittent symptoms.
If you specifically need a 24-hour ambulatory ECG, call 020 7101 3377 and we will advise on the best option for your symptoms.
A Holter monitor is a small, portable ECG recorder worn on the chest that records every heartbeat continuously over several days while you go about normal life.
It shows the heart’s rhythm over time and can detect atrial fibrillation, ectopic beats (including supraventricular ectopics, or SVE), supraventricular tachycardia, a slow heart rate, pauses and heart block that a brief resting ECG may miss.
It depends on how often your symptoms happen. Choose 3-day monitoring if palpitations or dizziness occur most days, 5-day if they are less predictable, and 7-day if they are occasional and unlikely to appear during a shorter recording.
The longer you record, the higher the chance of capturing an intermittent rhythm problem. If you are unsure, our team can help you choose.
You can carry on with most normal daily activity — and you should, because that is what the recording is meant to capture. The main restrictions are keeping the device dry, avoiding activities that could loosen the electrodes, and keeping the recorder away from strong magnets.
You can eat and drink normally. If exercise triggers your symptoms, tell us so it can be taken into account when the recording is reviewed.
Most standard Holter recorders are not waterproof, so avoid baths and swimming, and shower only if you are told your device is water-resistant. Many patients have a quick wash while keeping the monitor and electrodes dry.
We explain exactly what is safe for the device fitted at your appointment.
The electrodes are placed on the breastbone and rib area rather than on the breasts. A wired bra is usually removed while the device is fitted because the underwire can interfere with the trace, but an unwired or sports bra can normally stay on and often helps hold the leads comfortably.
On fitting day it helps to wear a two-piece outfit rather than a dress so the chest is easy to access.
Wear a comfortable two-piece outfit — a button-down or loose top and separate bottoms rather than a one-piece dress — so the electrodes and recorder can be fitted and worn discreetly under clothing. Loose tops make the monitor easy to conceal for the days you wear it.
Yes, and you should keep it on overnight, as night-time recordings are an important part of the assessment. The recorder is small and light enough to wear in bed; most people rest it beside them or clip it to nightwear, and sleeping on your back or side is usually most comfortable.
A Holter monitor records the heart’s rhythm, not the coronary arteries, so it does not directly show a blockage, though it can reveal rhythm changes that sometimes accompany reduced blood supply.
If a blocked artery is suspected, tests such as a CT coronary angiogram, a stress test or a cardiology consultation are the right next step, and an echocardiogram assesses the heart’s structure and pumping.
A standard Holter monitor records the ECG continuously, beat by beat, for the whole monitoring period. It does not measure blood pressure — that requires a separate 24-hour ambulatory blood pressure monitor, which is a different device.
If you need both rhythm and blood pressure assessed, let us know when you book.
SVE stands for supraventricular ectopics — extra heartbeats that start in the upper chambers of the heart. A small number of SVEs is very common and usually harmless.
Your cardiologist interprets how many occurred and whether the pattern needs any action, which is explained in your report.
Once the monitor is returned, the recording is downloaded and analysed and a GMC-registered cardiologist reviews it. A written report is typically ready within a few working days, with a GP referral letter included if a finding needs onward review. A follow-up cardiology consultation, if you’d like one, is booked as a separate appointment.
A Holter monitor is non-invasive and painless. The only common issue is mild skin irritation or redness where the sticky electrodes are worn, which can occasionally look like a small patch of burn, but settles quickly after removal. Tell us in advance if you have a known adhesive allergy.
London Private Ultrasound fits and reports Holter monitors at two clinics: Central London at 27 Welbeck Street, W1G 8EN, in the Harley Street Medical District, and St Albans at 54–56 Victoria Street, AL1 3HZ.
Both are open seven days a week, 9am to 7pm, with fitting usually available within a few days and no GP referral required.
