Calling 999 and 112: What Happens When You Ring

Dial 999, or 112, when someone is seriously ill or injured and their life is at risk¹. Both numbers are the national emergency response service in the UK, with 112 the pan-European equivalent that can be used here as well². The call is free, it works from mobiles and landlines, and the service is open all day and all night³.

When you ring, the first person you speak to is an operator who asks which service you need: ambulance, police, fire, or coastguard⁴. Say which one you want, and you are put through to that service's control room, where a call handler asks a short series of questions and arranges help while you are still on the line⁵. Answering those questions does not delay the response: help is being arranged while you talk⁶.

This page walks through the whole call: when 999 is the right number, exactly what happens step by step, what to do if you cannot speak or you hang up by mistake, how the call finds the right control room, and how the arrangements differ in Scotland, Wales and Northern Ireland.

When to call 999: a life at risk

The rule every UK ambulance service gives is the same: call 999 in a medical emergency, when someone is seriously ill or injured and their life is at risk¹. South Western Ambulance Service puts it plainly: "Please always call 999 if someone is seriously ill or injured and their life is at risk"¹. North West Ambulance Service uses almost identical words, and the Scottish Ambulance Service advises the same for Scotland¹⁰.

The test is whether you think the person could die. 999 is for life-threatening emergencies, when someone is seriously ill or injured¹². If you are unsure, the balance of official advice is to call rather than wait, because the call handler can tell you whether an ambulance is needed and, if it is not, what to do instead¹⁴.

The same principle applies beyond medical emergencies. West Midlands Ambulance Service's major incident advice is to call 999 if someone is seriously ill, injured or in immediate danger¹⁵. Local authority emergency guidance across England says the same: if lives are in danger or there is a risk of injury, contact the emergency services as soon as possible¹⁶, and if people are injured or there is a threat to life, call 999 or 112¹⁷. Belfast City Council's emergency planning advice for Northern Ireland matches it¹⁸.

Mental health crises can also be 999 emergencies. The Welsh Ambulance Service lists reasons people call 999 that include someone's life being in immediate danger, a serious risk of suicide or self-harm, or a person who is extremely distressed, confused, or behaving in a way that puts themselves or others at risk¹⁸. If you are unsure whether a situation counts, our page on when you should call 999 goes into more detail.

What counts as a 999 emergency

Ambulance services publish lists of genuine emergencies, and they are strikingly consistent. South Central Ambulance Service includes someone who is unconscious, not breathing, bleeding severely, has fallen from height, has a traumatic head or other injury, serious burns, severe chest pains or symptoms of stroke⁶. North West Ambulance Service's list adds cardiac arrest, a confused state, fits that are not stopping, breathing difficulties, severe allergic reactions, burns and scalds, suspected heart attack, stabbing, shooting and serious road traffic incidents¹².

The Welsh Ambulance Service's list for serious emergencies covers chest pain, difficulty in breathing, loss of consciousness, severe loss of blood, choking, fitting or convulsions, and severe allergic reactions¹⁹. Heat-related illness belongs on the list too: North East Ambulance Service advises calling 999 if someone is unconscious, having difficulty breathing, or has symptoms of heat stroke²⁰.

For fire, the advice from the Northern Ireland Fire & Rescue Service is to call at any sign of danger, not only when flames are visible: "At any sign of danger or in the event of an emergency, dial 999 and ask for the Fire & Rescue Service"²¹. If a fire breaks out in your property, get out if it is safe to do so, stay out, and dial 999 and ask for the Northern Ireland Fire & Rescue Service²¹. The same get out, stay out, call out principle applies across the UK.

You do not need to be the person involved. Essex Prepared's guidance is that if you are involved in an emergency or a witness to it, you should dial 999 and alert the police, fire, ambulance or coastguard service²³. Bystanders calling promptly are often the reason help arrives in time.

What happens when you ring: step by step

The first person you speak to when you call 999 is the BT operator, who will ask "Emergency, which service?"⁴. Your call is then connected to the emergency operations centre of the service you asked for⁴. North West Ambulance Service describes the same sequence: when you dial 999, a BT operator will ask you what service you need¹³.

In a life-threatening medical emergency, ask for the ambulance service²⁴. North East Ambulance Service's guidance is explicit: when you call 999, an operator will ask which emergency service you need, and in a life-threatening medical emergency you should ask for the ambulance service²⁴. The Welsh Ambulance Service describes being put through to a 999 call handler once you ask for an ambulance¹⁹.

Once connected, the call handler asks a short set of questions. East of England Ambulance Service lists what they will ask: whether the patient is conscious and breathing; what exactly has happened; the address of the emergency; and patient details including name, age and medical history if you know them⁴. North West Ambulance Service adds that you should give the location of the emergency, including the house number and street name if you are at home²⁵.

A point that worries many callers is worth stating clearly: the questions will not delay the help you need. South Central Ambulance Service's reassurance is that while you are talking to the control team, they will already be arranging help⁶. The Welsh Ambulance Service's easy-read guide to the call describes the same process: you are asked which service you want, you say ambulance, the call handler asks questions, and if it is an emergency they will send an ambulance¹⁴. If it is not an emergency, the call handler will tell you what to do¹⁴.

If you need an ambulance to get someone to hospital in an extreme emergency, that transport is free of charge, but it should only be used in an emergency². For everything less than an emergency, the non-emergency numbers page covers 101, 105 and NHS 111.

Staying calm and answering the questions

The single most repeated piece of advice from ambulance services is to keep calm and listen carefully to the questions. North West Ambulance Service's guidance for young people explains why: the questions are very important and will help you look after the person who is hurt or ill²⁵. Staying calm while you answer them helps the call handler get the information they need quickly.

Answer as best you can. The Welsh Ambulance Service's guide advises trying to answer the call handler's questions as best you can, and staying calm¹⁴. If you do not know an answer, say so: the handler would rather hear "I don't know" than a guess.

While you wait for the ambulance, there are practical steps that genuinely help the crew:

• Stay with the patient until help arrives, and call back if the patient's condition or location changes²⁴
• Ask someone to open the doors and signal to the crew where you are²⁴
• Write down the patient's GP details and collect their medication²⁴
• Tell the service about any allergies the patient has²⁴
• Phone 999 again if the person becomes more ill¹⁴

If English is not your first language, stay on the line: the phone line may go quiet when the operator is connecting you to a translator, and you should not end the call³. London Ambulance Service gives this advice in its guide to local 999 and 111 services³.

If you are on the phone to someone making a threat, the Police Service of Northern Ireland's personal safety booklet advises staying calm, listening carefully, keeping the caller talking and alerting someone nearby to dial 999, and noting details immediately. If the threat comes by text message, do not reply to, forward or delete it²⁶.

If you hang up, cannot speak, or cannot hear

The 45-second rule on landlines

If you call 999 from a landline and replace the handset, the landline may remain connected for 45 seconds, in case you pick it up again⁷. The Independent Office for Police Conduct's guide to the Silent Solution gives the same figure, and adds what happens next: if you pick up again during those 45 seconds and the BT operator is concerned for your safety, the call will be connected to the police²⁷. So if you hang up in error, or circumstances change, pick the handset back up quickly.

Because it is less likely that 999 calls are made by accident from landlines, the Silent Solution system is not used for landline calls⁷. When 999 calls are made from landlines, information about where you are calling from should be automatically available to the call handlers to help provide a response⁷.

Silent calls from mobiles: press 55

On a mobile, if you cannot speak, it is always best to speak to the operator if you can, even by whispering⁷. You may also be asked to cough or tap the keys on your phone in response to questions⁷. If you cannot do any of these and you do not press 55, the call will be terminated⁷. Our page on what to do if you dial 999 but cannot speak covers this in full.

Texting 999

People who find it hard to hear or speak can send a text message to 999 to get help from the emergency services, using the emergencySMS service²⁸. The Scottish Ambulance Service's guidance on the service sets out one timing rule worth knowing: if no reply comes within 3 minutes, send the text again and try to find another way of getting help, such as asking someone near you, a friend or someone in your family²⁸. Registration is required in advance, which our emergencySMS guide explains, and deaf callers can also use 999 BSL and Relay UK.

Calling with no signal, or during a network outage

Even if you have no signal on your usual mobile network, calling 999 will automatically connect through another network if one is available⁸. Ofcom, the communications regulator, explains that if your own mobile provider is experiencing an outage, you will be able to automatically use another provider's network to call 999 or 112 free of charge⁸. Your phone shows this as "emergency calls only" on Android or "SOS only" on iOS⁸.

This is why a mobile with no credit or no signal is still worth keeping charged: it can still reach the emergency services. Our pages on how to call 999 when your mobile network is down and mobile networks in a power cut cover the limits of this, and Wi-Fi calling and 999 explains what happens on that route.

Where your call goes, and who runs the service

Behind the scenes, calls made using 999 or 112 are identified and prioritised by the communications providers and forwarded to, and then answered by, call handling agents in one of 7 call-handling centres⁹. This is set out in the UK government's official guidance on the national emergency numbers⁹. From there, the geographic location of the caller, which is normally automatically available, enables the call to be transferred to the relevant geographically located emergency service control room⁹. That is why a 999 call made in Cardiff reaches the Welsh services and one made in Inverness reaches the Scottish ones.

Oversight is split. Ofcom, the independent communications regulator, oversees regulation of the telecommunications aspects of the 999-112 service through the General Conditions of Entitlement⁹. Technical and operational oversight is provided by the 999-112 Liaison Committee, hosted by the Department for Science, Innovation and Technology, previously the Department for Digital, Culture, Media and Sport⁹. The Committee's members include the Home Office, the Department for Health and Social Care, the emergency services, Ofcom, and the fixed and mobile communications providers⁹. It also has responsibility for the Code of Practice for the Public Emergency Call Service between communications providers and the emergency services⁹.

None of this changes what you do: you dial, you answer, help is arranged. But it explains two things callers notice. First, the first voice you hear is a BT operator rather than the service itself, because the initial answering is done at the call-handling stage before transfer⁴. Second, the Committee oversees sub-groups responsible for specific areas such as access to the service by vulnerable members of society, including those with hearing impairments, and emergency calls activated by smartphones⁹, which is why services like emergencySMS and smartphone SOS features exist and continue to develop.

When not to call 999

Do not call 999 if it is not an emergency, because doing so could delay helping someone who needs urgent assistance²⁴. The Welsh Ambulance Service makes the consequence explicit: calling 999 for a problem that is not a genuine emergency can delay crews from reaching someone who is in a life-threatening situation¹⁹.

Hoax calls are a separate matter entirely. North West Ambulance Service warns that prank or hoax calls can get someone into a lot of trouble, and above all it is against the law and could risk someone else not getting help²⁵. If you dial 999 by mistake, stay on the line and say so: that is far better than hanging up, and it takes seconds to resolve.

For urgent but not life-threatening medical problems, NHS 111 is the right service, and for non-emergency police matters it is 101. Police Scotland's guidance is that 101 is the number to contact the force for matters less urgent than 999²². Our non-emergency numbers page sets out which number to use for what. If 111 is busy, keep trying or use online alternatives, but if the person's condition worsens towards a life-threatening one, call 999.

How the four nations differ

The numbers and the basic process are the same across the UK, but the services that answer are organised separately in each nation, and it helps to know who you are talking to.

In Scotland, ambulance calls go to the Scottish Ambulance Service, which advises calling 999 in a medical emergency when someone is seriously ill or injured and their life is at risk¹¹. For police, the advice from Argyll and Bute Council's emergency contact guidance, reflecting Police Scotland's own, is to phone 999 when an immediate response is needed because a crime is happening, someone suspected of a crime is nearby, or someone is injured, being threatened or in danger²².

In Wales, the Welsh Ambulance Service answers 999 calls, and its guidance describes the same sequence as England: a telephone operator asks which emergency service you need, and in a medical emergency you should ask for an ambulance and be put through to a 999 call handler¹⁹.

In Northern Ireland, the Northern Ireland Ambulance Service explains that when you make a 999 call you will be asked a series of questions that help dispatchers categorise your call, and there are many different responses to 999 calls which can vary depending on the situation²⁹. Fire calls go to the Northern Ireland Fire & Rescue Service²¹, and police calls to the Police Service of Northern Ireland, which also advises contacting it on 101 or 999 where there are concerns about exploitation, trafficking or safeguarding of children². The nidirect government service confirms that 999 and 112 are the national emergency response numbers in the UK, with 112 the pan-European equivalent usable here².

Getting ready before you ever need to call

A 999 call goes better with a little preparation, and most of it takes minutes:

• Register for emergencySMS if anyone in your household finds it hard to hear or speak²⁸
• Keep a written list of emergency and non-emergency numbers where it can be seen without power or a phone
• Know your exact address as it would be given to a call handler, and read our guide to giving emergency services your exact location
• Add medical and emergency contacts to your phone's lock screen so a stranger can help you
• Keep a phone charged: a mobile with no signal can still connect to 999 through another network⁸
• If you rely on a landline, understand whether it will work in a power cut

These steps sit within the wider task of staying informed and in touch in an emergency, and of getting your household prepared for the kinds of event that lead to a 999 call in the first place.