Rewiring in London
House Rewire London — Old Wiring Replaced, Clear Pricing Agreed First
Unsatisfactory EICR sitting on your desk? Lights flickering, a board full of fuse wire, cable that's older than the tenancy? We supply and fit rewiring London-wide — East London, North London, South East London — with pricing agreed in writing before anyone lifts a floorboard.
- Written quote before work starts
- Same-day appointments available
- Phone line answered 24/7
- Perished rubber circuits replaced properly
Serving London, East London, North London, South East London, South West London and surrounding areas.
Rewiring — at a glance
- Areas covered
- London, East London, North London, South East London
- Common work
- VIR Rubber-Insulated Wiring, Degraded Rubber Insulation, Victorian Conversion Flat, BS 7671 18th Edition Compliance
- Same-day appointments
- Same-day appointments are available for all our services
- Quote before work
- Yes — a clear written quote after inspection
That "unsatisfactory" verdict on your EICR - C1s, C2s, maybe an FI against circuits you assumed were fine - is usually the point where patching stops being cheaper than replacing, and a properly designed rewire is what clears those codes for good. Lights that flicker, dim when the shower kicks in, or chew through bulbs every few weeks tend to trace back to tired conductors and loose terminations, so we replace the circuit instead of nursing the symptom. Where the board still takes fuse wire and nothing on it trips, an eicr certificate shows whether the trouble stops at the board or runs behind it. And when a survey flags old wiring, that same eicr certificate turns "might need rewiring" into an evidenced decision with a costed scope. Knowing which circuits have actually failed is what stops you paying twice.
Quick answer
Rewiring replaces the tired wiring, sockets, switches and fuse board in a property that's outlived its installation - usually perished rubber cable, lighting circuits with no earth, or a board still holding fuse wire. We test first, then price the work in writing. If a report has come back unsatisfactory, get old wiring replacement quoted before those codes turn into enforcement.
Rewiring London Homes and Flats
Rewiring work in London gets judged on the wrong thing - the number at the bottom of the page. Put two rewiring London quotes side by side and the cheaper one is often cheaper because it leaves circuits in place that nobody has properly tested.
Here's what we see week in, week out. A socket gets swapped. Then a light fitting. Then a shower spur goes in, fitted by whoever was cheapest that month - and every one of those small jobs is sitting on cable that's been buried in the wall since long before any of them. The accessories look modern. What's feeding them isn't. And once the insulation on that old cable has gone brittle - degraded rubber insulation, in report language - there's no patching it. It comes out.
That doesn't automatically mean the entire property. Plenty of these jobs land as a partial rewire: the oldest runs and the earthless lighting get replaced, sound modern cable stays where it is, and you pay for what genuinely needs doing rather than a blanket figure. But that's a call you make from test results, not from a glance in the loft with a torch.
Get it wrong and you buy the job twice - once for the patch, again eighteen months later when the same faults come back with the same codes against them. A tested scope tells you which of those two you're actually paying for.
Book electrical testing for your building
020 7123 9361House Rewiring in London, Circuit by Circuit
Rewiring around London gets treated as a date-of-build question - 1935 terrace, must need doing; 2005 flat, must be fine. Age is a clue, nothing more. What settles it is what the cable is made of and what it reads when a test goes across it.
The material we're really hunting is VIR rubber-insulated wiring - vulcanised rubber over the copper, standard until the early sixties and still sitting in loft voids and under floors across the capital. Rubber that old doesn't fail gracefully. Disturb it and it crumbles off the conductor, leaving live copper bare inside ceiling roses, junction boxes and switch drops. It's why changing a pendant in an older property sometimes ends with the whole lighting circuit dead. And when insulation resistance readings come back low, perished rubber or heat-cooked PVC is nearly always the reason - testing simply narrows down which stretch. At that stage there's no repair worth having: anything wired in it gets replaced, in whole or in part.
Aluminium conductor wiring from the sixties and seventies has a different habit. The metal creeps and oxidises, terminations slacken off, and you're left with high-resistance joints running hot behind accessories - a classic source of the intermittent fault nobody can pin down.
Earthing is the other big one. Every circuit needs a circuit protective conductor to carry fault current back to the earthing terminal so the protective device disconnects fast; older lighting circuits were run without one, and no number of new fittings fixes that. It's a standard trigger for rewiring London properties, full stop.
Work reaches us three main ways: a survey on a just-bought house flagging the wiring, a landlord clearing an unsatisfactory report before re-letting, and a flat where a shower or a loft conversion has outgrown what the original design was ever asked to carry. All three start identically - inspection and testing, then a written scope you can actually read. First fix runs cables, back boxes and containment while walls and floors are open; second fix hangs the accessories, terminates into the new board, and everything's tested and certificated.
Every month spent deciding is another month the oldest circuits stay live.
How a London House Rewire Runs
It starts with instruments, not chisels. Insulation resistance testing across the circuits, continuity testing on every protective conductor - that's what separates a rewire somebody genuinely needs from one that's been guessed at over the phone. Continuity testing is also what verifies the circuit protective conductor on each circuit, and where the lighting comes back with no CPC at all, you've got a finding you can point at in writing rather than an opinion.
Alongside that we take a maximum demand assessment: what the supply, tails and main switchgear can realistically carry once you've added the shower, the induction hob, the charger. No point designing circuits the incoming supply can't feed.
Then you get a scope on paper - which circuits are being replaced, which are staying, what the accessories and board will be. A rewire splits overloaded circuits that cause nuisance RCD tripping across new ways, which is a different job from a straight fuse box replacement, so where the board alone is the fault we'll say so and quote a consumer unit / fuse box upgrade with a new consumer unit instead.
The Victorian conversion flat is where the scope earns its money. A rewire in one of those routinely uncovers non-compliant DIY alterations that previous owners buried - junction boxes plastered into walls, borrowed neutrals between floors, missing earths on half the lighting - which an eicr certificate from proper EICR testing (the electrical installation condition report itself) flags before anybody lifts a floor.
On site, cables and back boxes go in while floors and walls are open, run inside the permitted safe zones so nothing ends up hidden where a future picture hook can find it. Accessories, the board and the final connections follow. Occupied properties get staged, circuit group by circuit group, and chasing gets made good as we go rather than left as a surprise for your decorator.
Last comes the paperwork: full testing, results recorded, certification issued and the notifiable work registered.
Guessing at this without test results is how people end up funding two rewires - the cheap one, then the real one.
Faults That End in a London Electrical Rewiring Service
Three things bring most people to this page. None of them are dramatic on day one - that's exactly why they get left.
Lights keep flickering, bulbs keep blowing
Flickering lights are the symptom people tolerate longest. It might be a loose connection at a switch, a ceiling rose or somewhere along the circuit. It might be nothing to do with the wiring at all - incompatible LED lamps and dimmers cause plenty of it. But if the whole property dims when a big appliance starts, a failing neutral or a supply-side connection could be behind it, and that one isn't a wait-and-see. Same-day appointments are available when it's got to that stage.
Old fuse box, no trip switches
An old fuse box with rewireable fuses and no RCD tells you the installation predates the requirement and has never been brought up to date. The board is usually just the visible tip - the wiring behind it tends to be the same vintage. Years of wrong-gauge fuse wire and heat may also have cooked the carriers and terminals themselves. Replacing the box on top of exhausted cable is the classic false economy.
"Does my house need rewiring?"
Sometimes a surveyor says it, sometimes the previous owner's paperwork does. What we typically find where a rewire is on the cards is original rubber or lead-sheathed cable still in service from the build era, lighting circuits without earths feeding accessories from a much later decade, or a patchwork of partial jobs that carefully avoided the oldest runs every time.
You can't sort any of that from a photo, and you shouldn't try - everything hidden is only visible under test. What goes back in afterwards is measured against one benchmark: BS 7671 18th Edition compliance, the standard current installations get judged by.
Left alone, none of these three get cheaper. They just get found by somebody else - an inspector, an insurer, or a tenant with a complaint.
Get a written quote for your electrical work
020 7123 9361House Rewire Near Me: London's Older Stock
Search "house rewire near me" in North London and most of what comes back is a Victorian or Edwardian terrace chopped into two or three conversion flats. That stock behaves in a predictable way. One flat got done in the nineties, the one above it never did, and the boards end up stacked in a shared hallway with nobody quite sure which tails feed what. Old rubber-insulated lighting sits behind chrome switches that were fitted last year - the fittings tell you nothing about what's above the ceiling.
Post-war and ex-council purpose-built blocks across South East London run to a different pattern: original boards with no RCD protection, plus decades of tenant alterations layered on top. Those tend to be the first flats to fail once a landlord duty pulls them into the five-year inspection cycle, and the remedial list is rarely just the board.
Then there's the 1960s-80s purpose-built flat with a shared supply, where alterations have accumulated across tenancies. A rewire there is as much about untangling what was added as replacing what's old.
Whichever it is, the end of the job looks the same. You're issued the Electrical Installation Certificate covering the new work - the document that says the circuits were designed, installed, inspected and tested properly. It's what letting agents want on file and what licensing officers ask for at application.
Older stock doesn't fail on a schedule that suits you. It fails on a Sunday, mid-tenancy, with a tenant on the phone.
Comparing Rewire Quotes?
Comparing rewire quotes is difficult when nothing's been tested - you're weighing guesses against each other. Book an EICR and you get the installation inspected, every code explained in plain English, and a clear written quote setting out which circuits need replacing and which don't. Whether that turns out to be a full house rewire or something far smaller, you'll know why before you commit a penny.
Full Rewire London - The Questions We Get Asked
What does competent-person scheme registration (NICEIC, NAPIT) actually mean?
Competent-person scheme registration means the individual electrician or the registered business has been assessed on technical competence, carries insurance and can self-certify notifiable work rather than paying building control separately. It attaches to that person or firm - it isn't a badge every trader on a van has earned. Ask who holds it and check the number yourself. Our engineers are qualified to the standards the work requires, and we're happy to talk through exactly what that covers before anything's booked.
How much does a house rewire cost, and how disruptive is it?
Honestly? It depends on size, access and scope. Lifting floors upstairs costs more than surface containment; doing every circuit costs more than doing four. Rewire cost also shifts depending on whether a replacement consumer unit is bundled into the job, which it usually is. Living through one means dust, chases in walls and rooms out of action in turn - so the work gets phased rather than done all at once. A written scope stops any of that arriving as a surprise halfway through.
What's the difference between an EICR and an Electrical Installation Certificate?
An EICR reports on the condition of an installation that already exists - what's there, what's wrong, and the code against each item. An Electrical Installation Certificate covers new work just carried out: a rewire, a new circuit, a new board. Landlords generally need the first on a cycle; anyone who's had work done should be handed the second. Ask for the wrong one and you'll be left holding paperwork the agent won't accept.
Do I need a full rewire or will repairs do?
It comes down to cable type and age, how far the faults spread, and whether the earthing and board are up to the job. Isolated problems get repaired. Perished cable running through most circuits doesn't. Testing is what actually puts you on one side of that line rather than the other - and until it's done, everyone's guessing, including whoever's quoting you.
Every week this sits undecided, the same circuits carry the same load.