Emergency communications for a UK home should not depend on one phone, one network or one source of power. A useful plan has several independent layers: a charged mobile, powered broadband and digital landline equipment where applicable, a battery or wind-up FM radio, and an offline household plan with paper contacts and meeting points.
Satellite equipment may add a valuable extra route for remote homes, islands, farms and households with serious communication needs. It is not a magic replacement for every other option. Satellite terminals still need power and a suitable view of the sky, while services, subscriptions and access to emergency help vary. The aim is diversity: if one route fails, the household knows exactly what to try next.
What emergency communications should a UK home have?
The right combination depends on mobile coverage, broadband technology, medical needs, location and budget. Start with equipment that solves different problems rather than buying several devices that all rely on the same mast, router or wall socket.
| Communication method | Best use | Main dependency or limitation |
|---|---|---|
| Mobile phone | Calls, texts, messages, internet and Emergency Alerts | Needs battery and an available mobile network |
| Fixed broadband and Wi-Fi | Messaging, news, Wi-Fi Calling and online services | Router and any fibre modem need power; the provider network must also be working |
| Digital landline | Home voice calls and, where compatible, connected devices | Usually depends on broadband equipment and mains power |
| Battery or wind-up FM radio | Receiving official and local broadcasts | Receive-only; it cannot call for help |
| PMR446 walkie-talkies | Short-range contact between household or nearby community members | Limited by terrain, buildings and battery; no direct access to 999 |
| Satellite broadband | Internet when land-based networks are unavailable | Needs a terminal, power, suitable sky view and active service |
| Satellite phone, messenger or supported smartphone feature | Contact beyond terrestrial coverage | Capabilities and emergency routing vary by device, service and location |
The UK Government’s phone and broadband outage guidance warns that a serious incident can affect mobile, landline and broadband services at the same time. Most disruption is short or localised, but severe weather can cause outages lasting several days. That makes an offline plan just as important as the equipment.
Create a household emergency communication plan
Write the plan before an outage and give every household member a copy. Children and adults who do not normally manage the technology should know the simple version: who to contact, where to meet and who will check on anyone vulnerable.
- Choose two meeting points. Pick one close to home and another outside the immediate neighbourhood. Both should be easy to find without an online map.
- Name an out-of-area contact. If local communications are disrupted, household members may be able to update one trusted person elsewhere even when they cannot reach each other.
- Keep contacts on paper. Include family, neighbours, school, carers, GP, utility providers, insurers and any medical or telecare supplier.
- Print essential details. Record medicines, allergies, account numbers, the home address and precise directions for emergency responders. Do not include passwords or information that would create a serious security risk if the paper were lost.
- Download offline maps. Phone GPS may still determine location without mobile service, but many map apps need their mapping data downloaded in advance.
- Agree check-in times. Scheduled, short updates reduce unnecessary calls and conserve batteries.
- Plan in-person welfare checks. Decide who will visit a relative or neighbour if calls and alarms stop working, provided it is safe to travel and official advice does not say to stay indoors or evacuate.
Practise the plan once or twice a year. Confirm that everyone can find the radio, cables, power banks and printed information in the dark. A plan that only one technically confident person understands is not a household plan.
Make mobile communication more resilient
A charged mobile is the most versatile first option, but mobile networks are not interchangeable. Two brands can use the same underlying physical network, so two SIMs do not necessarily provide two independent routes. Use the Ofcom mobile coverage checker, ask each provider which physical network it uses and test reception at home and around the local area.
- Keep phones charged and place a suitable power bank, cable and car charger in the emergency kit.
- Consider a second SIM or eSIM that uses a different underlying network, especially where coverage is unreliable. Check its activation, credit and expiry rules.
- Enable Wi-Fi Calling in advance if the handset and provider support it. This may allow calls when the mobile signal is down but powered broadband remains available.
- Write important numbers on paper so they are available if the phone is flat, damaged or locked.
- During an outage, reduce screen brightness, turn off unnecessary background activity and avoid streaming. Use airplane mode only when no connection is needed, because it can prevent incoming calls and Emergency Alerts.
If an emergency call cannot use the household’s normal mobile network, a 999 call will automatically try another available UK mobile network. This can help only if another network has coverage and capacity at that location. It does not create a signal where every nearby mast is unavailable.
Make sure Emergency Alerts can reach you
UK Emergency Alerts provide warnings and instructions during some life-threatening emergencies. Nearby mobile masts broadcast them to compatible devices. They are free, need no registration or app and do not require mobile data or Wi-Fi.
An alert still depends on a compatible device being switched on and connected to a UK 4G or 5G network. A phone on 2G or 3G, a Wi-Fi-only tablet, an incompatible device or a phone in airplane mode may not receive it. Keep software updated and search the phone settings for emergency alerts. The service supplements rather than replaces radio, local news and other official channels.
Keep broadband and the digital landline powered
Full-fibre and other modern broadband connections can continue through a local power cut if the provider’s network remains operational, but equipment inside the home still needs electricity. This may include the router, a separate Openreach optical network terminal, a cordless phone base and any digital landline adaptor. Powering only the router may therefore achieve nothing.
A small uninterruptible power supply, compatible DC battery backup or portable power station can keep the required equipment running. Check every device’s voltage, current, connector and polarity before using a DC supply. For a practical setup process, see How to Keep a Wi-Fi Router Running During a Power Cut. The site’s best power banks for power cuts and best portable power stations for home backup buying guides can help compare suitable power sources.
Digital landlines normally stop when the router or related equipment loses power. Ofcom says landline-dependent customers without a working mobile or reliable mobile signal must be offered a free backup solution by their provider that lasts at least one hour, with some providers offering longer. Tell the provider about low mobile coverage, disability, telecare or another additional need before an outage. Read Will Your Landline Work During a Power Cut? for the fuller equipment and provider checklist.
Test backup runtime under realistic conditions, label the leads and keep batteries charged. Household backup power cannot fix a damaged cable, flooded cabinet, failed exchange or exhausted provider battery, so broadband and a digital landline should remain one layer rather than the entire plan.
Use radio for broadcasts and local contact
A battery or wind-up FM radio is a simple way to receive updates when internet and television services are unavailable. Store spare batteries separately, write down useful national and local frequencies, and test reception in the rooms where the household might shelter. A radio receives information but cannot request assistance, so it must be paired with a two-way or in-person plan.
Compliant PMR446 walkie-talkies provide licence-exempt, short-range voice communication between family members or nearby neighbours. Ofcom describes PMR446 as a mobile, peer-to-peer system intended for short distances. Buildings, hills, trees, the user’s position and low batteries can reduce real range far below optimistic packaging claims.
- Buy genuine UK-compliant PMR446 equipment and keep matched charging cables or spare batteries.
- Test the exact route between home, meeting points and nearby households.
- Agree a channel, a backup channel, simple call signs and scheduled listening times.
- Keep messages short and do not share sensitive details. Other people can listen on the same channel.
- Do not treat a walkie-talkie as a route to 999. Unless a suitable listener happens to hear the call and can relay it, PMR446 only reaches other compatible radios within range.
Amateur radio can support longer-distance and organised community communication, but it requires suitable equipment, an Ofcom licence and learned operating skills. It is a hobby and public-service capability to develop before an emergency, not a box to buy and leave unopened.
When should a UK home consider satellite communication?
Satellite may be worth the cost for a remote property, an island home, a rural business, a household with very poor mobile coverage or anyone whose safety depends on maintaining contact. The UK Government notes that fixed satellite broadband and newer direct-to-device satellite services can sometimes help when land-based networks are down, but availability and performance vary.
| Satellite option | What it can provide | What to verify |
|---|---|---|
| Fixed satellite broadband, including services such as Starlink | Internet for multiple home devices, messaging and potentially Wi-Fi Calling | Terminal and router power, sky view, subscription status, data terms and expected local performance |
| Satellite SOS on a supported smartphone | Limited emergency messaging outside mobile and Wi-Fi coverage | Supported phone, current software, UK availability, clear-sky procedure and exactly which emergency uses are supported |
| Dedicated satellite messenger | Preset check-ins, location sharing or two-way text, depending on service | Active plan, recipient workflow, monitoring centre, battery, sky view and emergency response arrangements |
| Satellite phone | Voice or data through a satellite network | UK legality and service, subscription, antenna position, coverage and how emergency calls are routed |
Ofcom’s 2026 direct-to-device regulations enable compatible SIM-enabled equipment to connect to qualifying services in specified mobile spectrum, but a regulatory framework does not mean every phone, SIM or location now has satellite service. Check the provider’s current coverage, handset list and emergency features rather than relying on a general satellite logo.
Before depending on any satellite product, verify whether its emergency function contacts UK 999 or 112, an international response centre, nominated contacts or something else. Practise the non-emergency procedure outdoors, store the instructions offline and maintain the subscription. Never test an SOS button by activating a real emergency response unless the provider offers a specific test mode.
Protect people who rely on telecare or accessible services
A personal alarm, health monitor, security system or care pendant may depend on a landline, broadband, a mobile network, mains electricity or several of these. Ask both the communications provider and the device supplier what happens if each dependency fails. Confirm battery runtime, how a fault is shown, whether the device can use another network and what the manual fallback is.
People who rely on British Sign Language can use the free 999 BSL Emergency Video Relay Service through its app or website without registering. It needs a good internet connection, so the household plan should include powered broadband or mobile data and an agreed fallback if both are unavailable. Set up accessibility features and rehearse them before an emergency.
No consumer communications battery should be assumed to power oxygen equipment, dialysis equipment, refrigeration for medicine or another medical device. Discuss medical power and communication failures with the clinical team and equipment provider, and create an in-person welfare plan with trusted people nearby. Tell the landline and broadband provider about vulnerability or additional needs so it can assess suitable support.
Choose an emergency communications kit by risk
| Preparation level | Suitable additions | Best fit |
|---|---|---|
| Essential | Paper contacts, two meeting points, Emergency Alerts checked, offline maps, charging cables and a battery FM radio | Every household |
| Improved | Quality phone power bank, car charger, Wi-Fi Calling, spare SIM on another physical network and PMR446 pair | Most homes, especially where short outages occur |
| Fixed-service backup | UPS or compatible battery for router, fibre terminal, digital landline and cordless base | Home workers, poor indoor mobile signal and landline users |
| High resilience | Larger tested power reserve, multiple mobile networks and planned neighbour welfare checks | Longer outages, vulnerable residents and isolated properties |
| Remote or critical | Appropriate satellite broadband, messenger or phone with active service and practised procedures | Remote areas or serious communication dependency |
Buy the lowest layer first and test it before adding complexity. A paper plan, working FM radio and charged phone usually add more resilience than an expensive device that nobody has activated or practised using.
What to do when phone and internet services fail
- Check for immediate danger. Follow any Emergency Alert or instruction from the emergency services. Call 999 for an emergency if any available route works.
- Identify what has failed. Check whether the issue affects one device, the home power supply, the router, one provider or the wider area.
- Try independent routes. Move from landline to mobile, from the normal mobile network to another underlying network, or from mobile to powered Wi-Fi Calling. Move only if it is safe.
- Use concise messages. A short text or data message may get through when a voice call does not, but delivery can be delayed. Include location, condition, intended action and the next check-in time.
- Listen for verified updates. Use the battery FM radio and official provider or authority pages if internet access remains. Treat forwarded messages and unverified social posts cautiously.
- Conserve power. Stop streaming, close unnecessary apps, lower screen brightness and use devices only at agreed intervals.
- Activate the offline plan. Use meeting points and safe welfare visits if communication cannot be restored. Do not travel through unsafe conditions or ignore official shelter or evacuation advice.
Public Wi-Fi in a library, transport hub, café or community building may still work when a household connection does not. Use it only where the location is open and safe. Prefer official sites and encrypted services, and postpone sensitive banking or account changes if the network cannot be trusted.
Emergency communications checklist
- Create nearby and out-of-area meeting points.
- Nominate an out-of-area contact and agree check-in times.
- Print essential contacts, directions and medical information.
- Download offline maps and essential documents.
- Check Emergency Alerts and phone accessibility settings.
- Enable and test Wi-Fi Calling where supported.
- Check the underlying networks used by household SIMs.
- Keep a tested power bank, correct cables and car charger.
- Identify every powered part of the broadband and digital landline connection.
- Keep a battery or wind-up FM radio and spare batteries.
- Test PMR446 radios over the actual intended route.
- Confirm telecare, alarm and medical-device failure procedures.
- Tell communications providers about vulnerability and unreliable mobile coverage.
- Activate, update and practise with any satellite service before relying on it.
- Review the plan twice a year and after changing provider, handset or home equipment.
Emergency communications resources
- GOV.UK Prepare guidance on phone and broadband outages covers household plans, radio, offline maps, vulnerable people, Wi-Fi Calling, 999 roaming and satellite options.
- UK Emergency Alerts explains current alerts, official senders, accessibility and how to respond.
- How Emergency Alerts work explains compatible networks, devices and circumstances in which an alert may not arrive.
- Ofcom’s mobile coverage checker compares the four physical UK networks and explains factors that affect reception.
- Ofcom’s digital landline guidance covers power-cut limitations, telecare and free backup for eligible landline-dependent customers.
- Ofcom’s licence-exempt device guidance describes the permitted short-range PMR446 service used by compliant walkie-talkies.
- Ofcom’s direct-to-device satellite update explains the UK regulatory framework for qualifying SIM-enabled satellite services.
- 999 BSL provides the emergency video relay service for Deaf British Sign Language users and links to its app, browser service and instructions.
