Emergency Electrician in London: What to Do Before Help Arrives

Electrical emergencies almost never happen at a convenient time. It is usually late at night, mid-way through a wash cycle, or the first properly cold weekend of the year - when the heating comes on, the kettle goes on, and the whole flat suddenly goes dark. This guide is written for London homeowners, tenants and small business owners who want to know what to do in the first ten minutes of an electrical problem, and when it is time to pick up the phone to a 24/7 emergency electrician.

We run our emergency line from our Chiswick base and cover the whole of Greater London - from Ealing to the City, Camden to Clapham, Croydon to Enfield. Most of what follows is what we tell customers on the phone before we get in the van.

What actually counts as an electrical emergency?

Not every problem needs an electrician at 2am. Working out the difference matters - both for your safety and for the callout charge. In our experience the following are genuine emergencies that should not wait until morning:

• A burning smell coming from a socket, switch, light fitting or fuse board
• Smoke, sparks or a visible arc from any electrical accessory
• A fuse board, socket or plug that is hot to the touch
• An RCD that trips as soon as you reset it, or that will not stay in at all
• Water leaking into or across any part of the electrical installation
• Total loss of power to the property when your neighbours still have supply
• A cable that has been cut, crushed or exposed during building work
• Any electric shock, however mild, from a fixed appliance or accessory

Anything on that list is a category that BS 7671 - the UK wiring regulations - would treat as an immediate risk. It should be isolated and inspected by a qualified electrician the same day.

What is usually NOT an emergency

• A single dead socket in a room where the rest of the circuit still works
• A light bulb or LED that has finally given up
• A dimmable light that is buzzing quietly
• A power cut confirmed by UK Power Networks that is affecting the whole street
• A tripping washing machine or tumble dryer that resets fine when unplugged

These are all worth booking in for a normal repair appointment - often the next working day - but you do not need to pay an emergency callout rate to have them looked at.

The first ten minutes: making the property safe

If you have decided this is a genuine emergency, the priority is to remove the danger, not to fix it. That is a job for the electrician when they arrive. Here is what to do while you wait.

1. Do not touch anything that is hot, wet, sparking or smoking. Stand clear and keep children and pets out of the room.
2. If it is safe to reach the consumer unit (fuse board), switch off the main switch. This kills power to the whole property in one action. If you are not sure which is the main switch, turn everything off.
3. If a specific circuit is faulty and you know which one, switch off just that MCB or RCBO and leave the rest of the property live. Never wedge or force a tripped switch back in.
4. Unplug portable appliances that are on the affected circuit - especially anything with a motor, heater or transformer.
5. If you can smell burning plastic, open windows and get everyone out of the affected room. Do not use candles or naked flames.
6. In a fire or serious burning, call 999 first, then your electrician.
7. Report any leaking water to your building manager or landlord before anything else - electricity and water do not mix.

When to call a 24/7 electrician instead of your landlord

If you rent your home in London, your landlord or letting agent is generally responsible for the fixed electrical installation - the wiring, consumer unit, sockets, switches and fixed lighting. Under the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 they must hold a satisfactory EICR every five years and act quickly on any urgent electrical fault.

In practice, at 11pm on a Friday, you often cannot reach them. If the problem is dangerous - burning smell, smoke, exposed cables, no power to the whole flat - most tenancy agreements allow you to instruct an emergency electrician to make the property safe and pass the invoice to the landlord. Always:

• Try your landlord or agent first and keep a record of the time you called or messaged
• Only authorise the work needed to remove the immediate danger
• Ask the electrician for a written report describing what was found and what was made safe

We are used to this scenario and can send the report straight to your landlord or agent along with the invoice.

What to expect when the electrician arrives

A proper emergency callout follows the same shape every time. Any electrician who skips these steps is not doing the job:

1. Isolate the affected circuit or the whole installation before doing anything else
2. Ask you exactly what happened, when it started, and what you have already tried
3. Test the circuit with proper insulation resistance and continuity testers - not just a plug-in socket tester
4. Identify the actual fault (loose connection, damaged cable, failed appliance, water ingress, faulty accessory) rather than guessing
5. Make the installation safe: replace the failed component, isolate the damaged section, or remove the faulty appliance from the circuit
6. Explain clearly what was found, what has been done, and what still needs a follow-up appointment
7. Issue a written summary or Minor Works certificate for any parts they have replaced

If the full repair needs a part that is not available at midnight, or work that really needs daylight (loft, garden, exterior wiring), a good emergency electrician will make it safe, confirm a return visit and only charge for the emergency portion up front.

Realistic response times across London

From our Chiswick base we can usually get an engineer to most of West and Central London within the hour, day or night. Outer boroughs and areas across the river depend on traffic, especially at rush hour and around match days. When you call, ask for a realistic ETA in writing (a text message is fine) rather than a vague promise. If the operator will not commit to a time, that is a sign to try someone else.

Preventing the next emergency

Most electrical emergencies we attend in London have a common thread: an ageing installation that never had a proper condition report. If your property has any of the following, book a non-urgent EICR before something forces the issue:

• A wooden-backed fuse board, or a plastic consumer unit installed before 2008
• No RCD protection on socket circuits (you can check on the label inside the board)
• Sockets or switches with visible browning, cracking or scorching
• A history of trips on a specific circuit that no one has ever fully diagnosed
• Rented property with an EICR older than five years

An EICR takes a couple of hours in a typical London flat and gives you a full picture of the installation - and a proper list of anything that needs attention, coded honestly (C1, C2, C3 or FI). It is the single best way to turn a future 2am panic into a planned Tuesday afternoon appointment.

Talk to a real London electrician now

If you are reading this because something is going wrong right now, stop reading, isolate the affected circuit at the consumer unit, and call our 24/7 line. We will tell you honestly whether it can wait until morning or whether we need to be on the way - and we will confirm the callout price before we get in the van.