105

Free national fault line

Free, 24/7

UK Power Networks

Your DNO

serves Greater London

33+

towns covered

incl. Westminster, Camden, Islington

£95 to £390

Ofgem compensation

for a long unplanned cut

Live outage map for Greater London

The map shows incidents reported by users in real time, centred on Greater London. Zoom in on your street to check whether a cut is your home only or a wider network fault — when neighbours are also dark, it is a UK Power Networks job.

32 boroughs across the Thames basin, densely built and largely underground for power purposes. Weather rarely causes London outages directly; summer heatwaves can derate cables and cause localised trips during demand peaks. The biggest fault risk is third-party cable strikes during construction.

Live Power Outages in the UK

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Source: user reports · Selectra

Reports across Greater London

Logged by residents of the county in the last 24 hours.

No resident has logged a cut in Greater London in the last 24 hours. Our feed only knows what people tell it, so an unreported fault is still possible. For the confirmed picture, check the UK Power Networks live power cut map with your postcode, then add your report so your neighbours can see it.

Report a power cut in Greater London

Seeing a cut the map hasn't caught yet? Add it in seconds. Your report is anonymous and appears on the live map above so neighbours in Greater London know what's going on.

Thank you. Your report has been submitted and will help others in Greater London.

Reports are anonymous. We use your address to place the marker on the map and never display your personal details.

Power cuts by town in Greater London

Pick your town for local outage reports, the live map and your network operator's fault line.

Barking and Dagenham Barnet Bexley Brent Bromley Camden City of London Croydon Ealing Enfield Greenwich Hackney Hammersmith and Fulham Haringey Harrow Havering Hillingdon Hounslow Islington Kensington and Chelsea Kingston upon Thames Lambeth Lewisham Merton Newham Redbridge Richmond upon Thames Southwark Sutton Tower Hamlets Waltham Forest Wandsworth Westminster

Your village is not on the list? Greater London has far more settlements than we hold pages for, and they all sit on the same UK Power Networks network: the number to call is the same 105, and the live map above covers the whole county — zoom in on your postcode. For a street-level answer on a hamlet, enter your full postcode in the UK Power Networks live power cut map.

Why the power goes out in Greater London

Greater London is served by UK Power Networks across all 32 boroughs plus the City of London, with the most complex underground network in the UK and some of the fastest fault response times anywhere in Europe. 32 boroughs across the Thames basin, densely built and largely underground for power purposes.

Weather and terrain. Weather rarely causes London outages directly; summer heatwaves can derate cables and cause localised trips during demand peaks. The biggest fault risk is third-party cable strikes during construction.

How the network is run. UKPN's London network has triple redundancy in central zones — when one cable fails, supply normally switches automatically to a parallel feed. The 2003 South London blackout remains the largest unplanned UK cut in living memory.

A local quirk worth knowing. London's deepest power cables sit 35 metres below the streets near Bank — accessed through dedicated maintenance tunnels and not via street excavation. A fault here means a longer-than-average restoration.

Greater London is served by UK Power Networks. All network faults — whoever supplies your electricity (Octopus, British Gas, EDF, OVO, E.ON Next…) — are reported on 105. Your supplier handles the bill but cannot dispatch an engineer. For the operator's own confirmed fault data and an estimated restoration time, use the UK Power Networks live power cut map. Enter a postcode to see confirmed faults, the estimated restoration time and the number of properties affected.

What to do when the power goes out at home in Greater London

1

Check whether neighbours are affected

Look at the street lights and the houses opposite. If they're on, your fault is inside your home — check the consumer unit. If they're out too, it is a UK Power Networks network fault: call 105.

2

Dial 105 or 0800 31 63 105

Have your full postcode ready. Ask the operator for an estimated time of restoration (ETR) and a fault reference number — both make any later compensation claim faster.

3

Unplug sensitive electronics

Unplug TVs, routers, computers and consoles to protect them from a surge when supply returns. Leave one light switched on so you'll know visually when the power is back.

4

Log start and end times

Under Ofgem's Guaranteed Standards, a fault affecting fewer than 5,000 properties entitles a household to £95 once the supply has been off for more than 12 hours (24 hours for a larger fault), then £45 for each further 12 hours, capped at £390. Storms use a separate scale: £85 plus £45 every 6 hours, capped at £2,165. Keep a written log with photos — UK Power Networks normally pays automatically.

The Selectra expert answers your questions on power cuts in Greater London

Always to your Distribution Network Operator, not your supplier. In Greater London that is UK Power Networks. Dial 105 (Free national fault line) — free, 24/7 — or call UK Power Networks directly on 0800 31 63 105.

Weather rarely causes London outages directly; summer heatwaves can derate cables and cause localised trips during demand peaks. The biggest fault risk is third-party cable strikes during construction. UKPN's London network has triple redundancy in central zones — when one cable fails, supply normally switches automatically to a parallel feed. The 2003 South London blackout remains the largest unplanned UK cut in living memory.

There is no county-wide average worth quoting: a fault on an urban underground cable is often back within an hour or two, while an overhead line down in open country after a storm can take most of a day. The number that matters is the estimated time of restoration (ETR) UK Power Networks publishes for your specific fault — ask for it when you call 105, or read it off the UK Power Networks live power cut map after entering your postcode. Planned cuts are announced in advance and normally run 2 to 8 hours.

Yes, under Ofgem's Guaranteed Standards of Performance. Where the fault affected fewer than 5,000 properties — most street-level cuts in Greater London — a domestic customer gets £95 once the supply has been off for more than 12 hours, then £45 for each further 12 hours, capped at £390. Where more than 5,000 properties lost supply, that first £95 applies after 24 hours. Businesses start at £190. Four or more cuts of three hours or longer in a single year earn an extra £95. Payment from UK Power Networks is normally automatic.

UK Power Networks announces planned cuts by letter (and increasingly text or email) 2 to 8 days in advance. Most run 8am to 6pm and last 2 to 8 hours. Planned cuts do not qualify for compensation unless your operator failed to give adequate notice.

Power cuts in nearby areas

Other counties close to Greater London — useful if your storm or fault crosses council boundaries.

City of London

UK Power Networks

Hertfordshire

UK Power Networks

Surrey

SSEN

Bedfordshire

UK Power Networks

West Sussex

SSEN

East Sussex

UK Power Networks

Buckinghamshire

SSEN

Essex

UK Power Networks

Other counties served by UK Power Networks

Same operator, same emergency number, similar restoration patterns and compensation framework.

Bedfordshire Cambridgeshire City of London East Sussex Essex Hertfordshire
What to do in a power cutStep-by-step guide and compensation rules. National live map & reportReport a cut and browse every county. All of EnglandEvery county and DNO across England. UK Power Networks network guideCoverage, contacts and live map.