Severe toothache, a cracked tooth or a swollen face rarely waits for a convenient appointment. If you are searching for an emergency walk-in dentist in London, you probably want two things: relief, and a clear idea of where to go.

This guide explains how emergency dental care works in London, the difference between NHS and private options, what each costs in 2026, and when a dental problem needs A&E instead. It also covers what to do while you wait and answers ten questions people often ask.

Quick answer

For most dental emergencies in London, contact your usual dentist first. If you do not have one, or they are closed, use NHS 111 online or call 111, which can book you into an urgent NHS dental appointment. You do not need to be registered with a practice.

NHS urgent dental treatment in England costs £27.90 (from 1 April 2026), unless you qualify for free treatment. Private emergency clinics can often see you the same day, sometimes without a booking, but you will pay more.

Go to A&E or call 999 if you have serious injuries to your face or jaw, heavy bleeding that will not stop, or swelling that makes it hard to breathe or open your eyes.

What is an emergency walk-in dentist?

An emergency walk-in dentist is a clinic that treats urgent dental problems at short notice, often on the same day and sometimes without a pre-booked appointment. Many also open in the evenings or at weekends.

In practice, “walk-in” can mean different things:

• True walk-in: you turn up and wait to be seen. This is now uncommon and capacity is limited.
• Same-day booking: you call or book online in the morning and are seen later that day. Most private “emergency” clinics in London work this way.
• NHS urgent appointment: you are assessed by phone or online, usually through NHS 111, then given a timed slot at a local practice.

Whichever route you use, calling ahead is almost always quicker than simply arriving. It also avoids a wasted journey if the clinic is full.

How emergency dental care works in London

London has three main routes for urgent dental care. The right one depends on how serious your symptoms are and how quickly you need to be seen.

NHS urgent dental care

The NHS route usually starts with your own dental practice. Many practices keep urgent slots and may see you the same day if you call when they open.

If you do not have a regular dentist, or your practice is closed, NHS 111 can assess your symptoms and direct you to an urgent dental service. According to the NHS guide to emergency and urgent dental appointments, you should be offered urgent treatment within 24 hours or 7 days depending on your symptoms, and within 1 hour (or as soon as possible) if you have knocked out an adult tooth.

A few practical points:

• You do not need to be registered with a dentist to get urgent NHS care.
• Do not contact your GP for dental treatment. GPs cannot provide it.
• If 111 arranges a nurse callback, answer your phone. The NHS says a nurse will try up to three times, and if they cannot reach you, you will need to start again.

Private emergency and walk-in clinics

Private clinics set their own prices and opening hours. Many in central London advertise same-day emergency appointments, and some open late or at weekends.

The main advantages are speed and choice. The trade-off is cost: you will usually pay an emergency consultation fee, then extra for any X-rays or treatment. Always ask for the price before treatment starts.

When the hospital is the right place

A&E is for dental problems that threaten your breathing, involve serious injury, or cause bleeding you cannot control. For ordinary toothache, A&E staff can usually only offer pain relief advice and will direct you back to a dentist.

Is it a dental emergency? How to decide

Not every dental problem needs same-day care, but some should never wait. The table below follows current NHS guidance.

A tooth that breaks without pain can still need prompt attention. Pain is not the only sign that something is wrong, so describe exactly what happened when you call.

A mouth ulcer that has not healed after 2 weeks should always be checked, even if it is painless. Our guide to the early signs of tongue cancer explains why persistent patches and ulcers are worth investigating.

How much does an emergency dentist cost in London?

The cost depends on whether you are seen on the NHS or privately.

NHS costs in England (from 1 April 2026)

The urgent charge covers treatment to stabilise the problem. That can include an examination, X-rays, a temporary filling, draining an abscess, removing up to two teeth, managing a knocked-out tooth and one urgent filling. If you then need a full course of treatment, that is charged separately.

Some treatments are free, including stopping bleeding (for example after an extraction), removing stitches and repairing dentures.

Who gets free NHS dental treatment? In England this includes people under 18, under 19 and in full-time education, pregnant or with a baby under 12 months, or receiving certain benefits such as Universal Credit or Income Support. Others on a low income may qualify for help through the NHS Low Income Scheme.

Private emergency costs

Private prices vary widely across London. Clinics typically charge an emergency consultation fee and then price treatment separately, with evening and weekend appointments sometimes costing more. Ask for a written estimate before you agree to treatment, and check whether X-rays and prescriptions are included.

Benefits of walk-in and same-day emergency dental care

When it works well, prompt emergency care offers real advantages:

• Faster pain relief. A dentist can treat the cause of pain, for example by dressing a tooth or draining an abscess, rather than you relying on painkillers.
• A better chance of saving a tooth. For a knocked-out adult tooth, timing matters. Getting it replanted quickly gives it the best chance.
• Infection control. A dental abscess will not go away on its own. Treating the source early can stop the infection getting worse.
• Care outside office hours. Some private clinics open in the evening or at weekends, and NHS 111 operates 24 hours a day.
• Referral when needed. If your problem is complex, an emergency dentist can refer you to a specialist or hospital service.

There are limits too. Emergency appointments aim to stabilise the problem, not complete every treatment. You may need follow-up visits, and availability on the NHS can vary from day to day. No service can guarantee a particular outcome.

What to do while you wait

These steps can help until you are seen. They do not replace treatment.

Toothache

• Take painkillers such as paracetamol or ibuprofen, following the packet instructions. A pharmacist can advise which suits you.
• Do not take more than the recommended dose. A higher dose will not work better and can be dangerous.
• Children under 16 should not take aspirin.
• Avoid very hot, cold or sugary food and drink, and chew on the other side.

Knocked-out adult tooth

1. Hold the tooth by the white part (the crown). Do not touch the root.
2. If it is dirty, rinse it gently in milk, saline or saliva.
3. Try to push it back into the socket, then bite gently on a clean cloth to hold it in place.
4. If it will not go back, keep it in milk or saliva.
5. Get to a dentist as soon as possible.

Never put a baby tooth back in, because it could damage the adult tooth growing underneath. Still contact a dentist for advice.

Broken tooth, lost filling or crown

Keep any broken pieces, avoid chewing on that side, and contact your dentist. Temporary filling kits from pharmacies can protect a sharp edge for a short time, but you still need a dental check.

Facial swelling

Do not hold anything hot against a swollen face. If swelling is spreading towards your eye or neck, or affecting breathing or swallowing, go to A&E.

Broken braces

A loose bracket or poking wire is uncomfortable but rarely an emergency. Contact your orthodontist, and if you are in pain out of hours, an urgent dental service may help. Our Invisalign vs braces guide covers what to expect during orthodontic treatment.

How to choose a private emergency dentist in London

If you decide to go private, a few checks help you avoid surprises:

1. Call before you travel. Confirm they can see you today and ask about waiting times.
2. Ask about price first. Get the consultation fee and likely treatment costs in writing.
3. Check registration. Dentists in the UK must be registered with the General Dental Council (GDC), and dental practices in England must be registered with the Care Quality Commission (CQC). Both registers are free to search.
4. Ask what happens next. Find out whether follow-up treatment is included and whether they will send notes to your regular dentist.
5. Be wary of pressure. If you are offered extensive treatment you did not expect, it is reasonable to ask for time to think or seek a second opinion, once the urgent problem is under control.

Final thoughts

In a dental emergency, the quickest safe route is usually a phone call: to your own dentist, to NHS 111 or to a private clinic that offers same-day care. Keep A&E for serious injuries, uncontrolled bleeding and swelling that affects breathing or vision.

Once the emergency is over, regular check-ups are the best way to catch problems before they become urgent. For more guides on looking after your health, browse our health articles.

This article is for general information and does not replace advice from a dentist or doctor. NHS charges shown apply in England; charges differ in Scotland, Wales and Northern Ireland.