How to Prepare for an Internet Outage in the UK: Practical Steps for November 2026

Verified: November 8, 2026, at 5:06 a.m. UTC (London, GMT; UTC+00:00).

A UK internet outage can interrupt work, payments, medical appointments, and contact with family. The most useful preparation is to make a plan that still works if both home broadband and mobile data are unavailable: keep essential information on paper, charge backup batteries, and agree on how to check in with others.

Interest in a “UK black sky plan” makes these preparations timely, but it does not establish that a widespread outage is imminent. UK government guidance says phone and broadband disruptions are usually short or localized, although severe incidents can last longer. Read the government's phone and broadband outage guidance.

Destaques

• Write down essential numbers and agree on a meeting point or check-in plan before an outage.
• Keep phones and power banks charged, but remember that backup power cannot fix a damaged network.
• Ask your provider about emergency-call backup if you depend on a digital landline and lack a reliable mobile alternative.
• Keep a battery or wind-up radio and a small amount of cash for updates and essential purchases.

What should you do first if the internet goes down?

Check whether the problem affects one device or the whole household. Try another device and see whether your router has power or displays a fault indicator. If mobile data works, check your provider's service-status page or contact its support team. A neighbor may be able to tell you whether their connection is also affected, although different providers can have different faults.

If your home broadband is down but mobile service works, use mobile data for essential tasks. A phone hotspot can connect a laptop, subject to your plan's data allowance and signal. Turn off automatic downloads and video streaming to conserve data and battery power. If the mobile network is down but broadband still works, Wi-Fi calling may be an option on a compatible phone.

If there is also a power cut, report it to the electricity network operator: call 105 in England, Scotland, and Wales, or 03457 643643 in Northern Ireland. Keep these numbers on paper as well as on your phone. The government's power-cut guidance explains what else to prepare.

What should be in a UK internet outage plan?

Make a small offline kit and store it somewhere everyone in the household can find it. Review it periodically, especially after a change of address, provider, medication, or contact number.

• Contact sheet: Write down family, neighbors, carers, your broadband provider, and relevant medical contacts. Include addresses and an agreed meeting point.
• Power: Charge a power bank and keep suitable charging cables handy. A battery-powered or wind-up flashlight with spare batteries is useful during a power cut.
• Information: Keep a battery-powered or wind-up radio and note the frequencies of useful local and national stations. Radio can provide updates when internet access is unavailable.
• Money and documents: Keep a small amount of cash for essentials if card terminals or ATMs are disrupted. Store copies of important details securely, with sensitive account information protected.
• Offline access: Download maps, tickets, key work files, and any accessibility resources you may need. Check in advance that they open without a connection.

Agree on a check-in schedule and a safe way to reach one another if messaging apps stop working. Consider who might need extra help, including people who live alone. If it is safe, check on neighbors during a prolonged disruption.

Will a router or digital landline work during a power cut?

Home broadband equipment needs electricity. A compatible backup power supply may keep your router and any required fiber equipment running for a limited time, but it cannot guarantee service if equipment elsewhere in the network has lost power or been damaged. Ask your provider which devices need power and which backup equipment is compatible before buying anything.

Digital landlines also need power and a working connection. If you depend on your landline to contact emergency services and do not have a working mobile phone or reliable mobile signal, tell your provider. Ofcom says your provider must offer a free backup solution that enables emergency calls for at least one hour during a power cut; the solution may have limits, so ask what it supports and how to maintain it. See Ofcom's digital landline advice.

If you use a care alarm, health pendant, or another device connected to your phone line, contact both its supplier and your landline provider. Ask how it behaves during a broadband failure or power cut and agree on an alternative support plan. Do not assume a router battery will keep every connected device working.

How can you contact emergency services during an outage?

For an emergency, call 999 or 112. If your usual mobile network is unavailable, an emergency call may connect through another available mobile network. This still requires a usable network signal; it is not a guarantee when all nearby networks are unavailable. Try a working landline as well if your mobile cannot connect.

If you still cannot get through, the government advises seeking help directly from emergency responders or going to a police, fire, or ambulance station or hospital, if it is safe to do so. People with additional communication needs should use their established accessibility services, such as Relay UK, Emergency SMS, or 999 BSL, where available. Check the requirements of any service you rely on ahead of time.

UK Emergency Alerts do not require mobile data or Wi-Fi, but a compatible device must be within range of a functioning 4G or 5G mast. A radio remains a useful additional source of information if mobile coverage is affected. Check how Emergency Alerts work.

How can you prepare for work, banking, and other disruptions?

Save the files and phone numbers you need for essential work, and agree with your employer or clients on an alternative contact method. If working elsewhere is an option, identify a suitable location in advance, but check that it is safe and open before traveling. A separate mobile connection can help with a broadband-only fault; a wider power or network disruption could affect both.

For banking and shopping, cash can help with small essential purchases, although it will not solve every payment problem. Keep a paper list of important appointments and make a plan with healthcare providers for obtaining advice if their online systems are unavailable. Avoid storing passwords or full payment-card details in an easily accessible emergency kit.

After service returns, check messages from your provider, recharge batteries, and replace anything used from the kit. The duration and reach of any future outage will depend on its cause and the networks affected; a household plan reduces dependence on a single connection but cannot guarantee uninterrupted service.

Frequently asked questions

Does a “black sky” search mean a UK internet outage is imminent?

No. Search interest alone is not evidence that an outage is about to happen. Follow official alerts and your providers for information about actual incidents.

Can I use mobile data if my broadband fails?

Often, if your mobile network has coverage and capacity. A power cut or wider network fault can also affect mobile service, so keep an offline backup plan.

Will a power bank keep my internet working?

It can charge a phone, and a suitable backup unit may power compatible broadband equipment. Neither can restore a network that is down outside your home.