Electrical Repairs And Installation in London Diagnosed Right, Fixed Once, Fully Certified
Liviosiv is a dual NICEIC and NAPIT registered electrical contractor based at 34 Ennismore Avenue, Greenford, providing electrical repair, installation, and ongoing electrical maintenance for sockets, switches, lighting, fuse boxes and consumer units, extractor fans, heating controls, immersion heaters, and full or partial rewires. Every notifiable job is certified an Electrical Installation Certificate (EIC), Minor Works Certificate, or EICR remedial confirmation and submitted to Building Control under Part P where required.
If you are searching for electrical repairs near me because something has already stopped working, the troubleshooting table further down this page will likely tell you what is actually wrong before an engineer even arrives. If you are comparing electrical services before booking, the sections on dual accreditation and pricing will answer the two questions most people ask first: can I trust the certificate, and what will this cost?
What Liviosiv Covers in London
In practice, most calls fall into one of two buckets: something has broken and needs diagnosing, or something new needs fitting and certifying. Liviosiv handles both, for the same property types, often on the same visit a landlord with a tripping circuit on one unit might also need a consumer unit upgrade on another, and our engineers carry the parts and test equipment to deal with either without a second appointment.
Electrical Services
Residential EICR
Commercial EICR
Electrical Diagnostic
Fuse Box Installation
PAT Testing
Emergency Lighting Certificate
Domestic EICR Cost
Studio
£85
1 Bedroom
£119
2 Bedroom
£119
3 Bedroom
£129
4 Bedroom
£139
5 Bedroom
£149
Landlords
Property Agents
Letting Agents
Property Owner
Why Dual NICEIC and NAPIT Registration Matters to You
A contractor registered with only one competent person scheme is still fully qualified to do the work but their certification depends on one body’s records being checked correctly by whoever needs to verify it later. Liviosiv’s dual registration means that whichever scheme a mortgage valuer, insurer, or local authority happens to check, our certification shows up. We explain exactly what this means for your paperwork in the next section.
If you need a five-yearly condition report rather than a one-off repair, see our EICR London service.
Geographical Breakdown of London’s Districts
Why Dual Accreditation Sets Liviosiv Apart
Most London electrical contractors register with one competent person scheme usually NICEIC, occasionally NAPIT and that single registration is what their notifiable work is certified through. Liviosiv holds both. In practice this is less about having “two badges” and more about removing a specific risk: the risk that whoever needs to verify your certificate later checks the one register you are not on.
What NICEIC Registration Means for Your Certificate
NICEIC is the UK’s most widely recognised electrical competent person scheme, and most mortgage valuers, insurers, and council building control teams default to checking it first. Work certified under our NICEIC registration is independently assessed against NICEIC’s technical standards, and the registration number appears on every EIC and EICR we issue.
What NAPIT Registration Means for Your Certificate
NAPIT carries equal legal standing to NICEIC under the competent person scheme framework, and is the register some lenders, insurers, and local authorities check by default instead. Holding NAPIT alongside NICEIC means our certification isn’t dependent on which single scheme the person checking it happens to be familiar with.
Why Mortgage Lenders, Insurers and Councils Accept Both
In our experience, the moment this matters most is during a property sale or insurance claim, when someone unfamiliar with electrical trade bodies is trying to verify a certificate quickly. A contractor who can only be checked against one register creates a delay if the wrong one is checked first. Dual registration removes that single point of failure which is precisely why we maintain both rather than letting one lapse.
Our Insurance, Testing Equipment and Compliance Credentials
Alongside dual accreditation, every job is backed by public liability insurance of at least £5 million per occurrence, and all diagnostic work uses calibrated test equipment insulation resistance testers, earth loop impedance meters, and RCD testers with calibration certificates available on request. Certification only means something if the testing behind it is accurate, which is why we treat calibration as a compliance requirement, not an optional extra.
If your EICR has already flagged C1 or C2 faults, see our EICR remedial works London service for how quickly these are resolved.
The accreditation behind a repair only matters once something has actually gone wrong so the next section covers how we work out what is actually wrong before any part gets replaced.
Our Complete Landlord Safety Certificate Services in London
Gas Safety Certificate
Certified EICR inspections to ensure your property’s wiring is safe, compliant, and legally approved.
Fire Safety Services
Complete fire safety inspections, alarms, and compliance solutions to protect your property and occupants.
Energy Performance Certificate (EPC)
Fast and accurate EPC assessments to rate your property’s energy efficiency and meet legal requirements.
Asbestos Survey
Professional asbestos surveys to identify risks and ensure full compliance with UK safety regulations.
Inventory Services
Detailed property inventory reports with photos to protect landlords, agents, and tenants.
Legionella Services
Legionella risk assessments and water testing to maintain safe and compliant water systems.
Most Electrical Faults Aren’t What They First Appear to Be
A flickering light is rarely just the bulb. A tripping fuse box is rarely just “old wiring.” A bathroom fan that won’t switch off is rarely the motor. The mistake we see most often usually from a previous, rushed callout is a component replaced based on the symptom rather than the cause, which fixes nothing and costs the customer twice.
The Cost of Replacing the Wrong Part First: When the wrong component gets replaced, the fault returns within weeks because the actual cause was never addressed. We have seen extractor fans fully replaced when the failure was a £15 humidistat sensor, and consumer unit breakers swapped repeatedly when the fault was a single failing appliance on one circuit. The financial cost of a wrong-first-guess repair is usually two to three times the cost of correct diagnosis followed by the right repair.
How We Diagnose Before We Quote: Every repair visit starts with isolation testing, insulation resistance checks, or earth loop impedance measurement, depending on what the symptom suggests. This is not an upsell step, it is the difference between a quote for the actual fault and a guess dressed up as a quote. We diagnose first and quote second, every time, which is also why our written quote only follows a confirmed cause, not a checklist of likely parts.
When a Repair Is the Right Fix and When It Is not: Not every fault is worth repairing in isolation. A consumer unit from before 2008, for example, often makes more sense to replace outright than to patch breaker by breaker, particularly if RCD protection is missing across the board. We will tell you honestly when targeted repair is the right call and when it is a false economy that judgement is part of what you are paying for, not an upsell tactic.
If a consumer unit upgrade or wider condition assessment looks like the better long-term call, see our EICR London and consumer unit installation pages.
Knowing how we diagnose is one thing; knowing what your specific symptom is likely telling you, before an engineer even arrives, is more useful. That’s what the next section covers.
What Your Electrical Symptom Is Probably Telling You
The table below reflects the most common causes behind the symptoms we are called out for across London. It won’t replace a proper diagnosis, but it should tell you roughly what to expect and, in some cases, whether it is safe to wait for a scheduled visit or whether you need to call now.
Symptom | Most Likely Cause | Typical Resolution |
Fuse box keeps tripping | Faulty appliance, overloaded circuit, or RCD nuisance tripping from an EV charger or smart device | Isolation testing to find the specific circuit; MCB or RCBO replacement |
Lights flicker or dim | Loose terminal connection, LED-incompatible dimmer, or overloaded lighting circuit | Terminal re-tightening, dimmer swap, or circuit redistribution |
Socket feels warm or scorched | Overheated internal connection almost never cosmetic alone | Socket replacement plus inspection of the cable behind it |
Extractor fan won’t switch off | Failed humidistat sensor, not the fan motor, in most cases | Humidistat or timer module replacement |
Underfloor heating won’t heat | Thermostat or floor probe fault, far more often than a cable break | Thermostat or sensor replacement — no floor lifting unless a cable fault is confirmed |
Partial power loss in one area | Tripped circuit, failed junction box, or loose spur connection | Trace from consumer unit outward to the exact failure point |
Burning smell from a socket or consumer unit | Active overheating fault treat as urgent | Isolate the circuit immediately and call us |
Electrical Repair Services We Carry Out
Lighting and Lighting Circuit Repairs
Lighting faults range from a single dead downlighter usually a failed LED driver, not the fitting itself to flickering across an entire circuit. We diagnose the actual cause before replacing anything, since LED driver failure and loose terminal connections account for the large majority of lighting calls we attend, far more often than the bulb itself.
Switch and Socket Repairs and Replacement
Standard switches and sockets have no serviceable internal components, so when one fails or shows heat damage, replacement combined with an inspection of the wiring behind the faceplate is the correct fix, not a faceplate swap alone. We also fit and configure smart switches, including app pairing, where requested.
Fuse Box and Consumer Unit Fault Diagnosis
We isolate the specific faulty circuit using insulation resistance and RCD testing rather than swapping breakers until one happens to hold. Individual MCB and RCBO replacement is carried out without replacing the whole board wherever the existing unit allows it; full replacement is only recommended when repair genuinely isn't the more sensible option.
Wiring and Circuit Fault Tracing
Dead circuits and partial power loss are traced from the consumer unit outward, through junction boxes, spurs, and accessories, using calibrated test equipment. This systematic approach is slower than guesswork on the first visit but considerably faster overall, since it avoids repeat callouts for the same underlying fault.
Extractor Fan and Ventilation Repairs
Most "broken" extractor fans were called to turn out to be a failed humidistat or timer module rather than the motor. We identify which component has actually failed before ordering parts, which typically keeps repair cost well below full unit replacement.
Heating Control Repairs
Thermostat and programmer faults, zone valve motor failures, and wiring connection issues between thermostat, programmer, and boiler terminal block are diagnosed and resolved, with replacement fitted only where the existing control has genuinely reached end of life.
Underfloor Heating Diagnostics and Repair
Faults are diagnosed using insulation resistance testing and thermal imaging before any flooring is disturbed. In most cases, the fault sits in the thermostat or floor sensor both replaceable without lifting the floor, which is the outcome most customers are hoping for when they call.
PAT Testing and Appliance Safety Checks
Portable appliance testing for landlords, HMOs, and commercial clients, with a full written pass-or-fail register issued after every session and combinable with an EICR visit to reduce total site time for landlords managing compliance across the same visit. Full scope and pricing detail is on our dedicated PAT testing London page.
Heating Control Repairs
Thermostat and programmer faults, zone valve motor failures, and wiring connection issues between thermostat, programmer, and boiler terminal block are diagnosed and resolved, with replacement fitted only where the existing control has genuinely reached end of life.
Why Does My Fuse Box Keep Tripping?
A breaker or RCD that won’t stay reset is doing its job correctly; it is the protective device responding to a fault, not failing on its own. In most London properties we attend, the cause is either a single faulty appliance, an overloaded circuit, or increasingly common in newer flats nuisance tripping caused by an EV charger or several smart devices sharing one RCD.
Why Are My Lights Flickering or Dimming?
Flickering is one of the most commonly misdiagnosed faults because it is tempting to assume the bulb. In practice, a loose terminal connection or a dimmer switch incompatible with LED bulbs accounts for most cases and LED-incompatible dimmers are becoming more common as older properties get partially upgraded to LED lighting without a corresponding dimmer swap.
Why Is My Socket Warm or Scorched?
Standard sockets have no field-serviceable internal parts, so heat damage means the internal connection has overheated; this is rarely cosmetic. A warm or discoloured socket should be treated as an early warning sign, not a wait-and-see issue, because the wiring behind the faceplate is usually the actual cause, not just the fitting itself.
Why Won’t My Extractor Fan Switch Off?
Across our bathroom fan callouts, the majority turn out to be a failed humidistat sensor rather than the fan motor itself. The humidistat controls when the fan runs based on humidity, and when it fails, the fan often runs continuously regardless of actual moisture levels replacing it is a fraction of the cost of a full unit swap.
Why Has My Underfloor Heating Stopped Working?
Floor lifting is rarely necessary. In most cases, the fault sits in the thermostat or the floor sensor both replaceable without disturbing the flooring. We confirm whether a cable fault genuinely exists using insulation resistance testing and thermal imaging before recommending any floor access.
Why Have I Lost Power to Part of My Property?
Partial power loss is traced systematically from the consumer unit outward, through junction boxes and spurs, until the exact point of failure is identified — guesswork at this stage usually means a return visit later.
I Can Smell Burning What Should I Do Right Now?
This is the one symptom on this page that warrants immediate action rather than a scheduled booking. Isolate the affected circuit at the consumer unit if you can safely do so, and call us straight away a burning smell indicates active overheating, not a fault that can wait for a routine slot.
If portable appliance testing is also due for your property, see our PAT testing London service it can often be combined with a repair visit.
Once the likely cause is clear, the next two sections set out exactly what we repair and what we install in full technical detail, not just a symptom list.
Our Accreditations And Professional Standards
All EICR inspections are carried out by NICEIC-approved electricians.
£5M Public Liability Insurance
NICEIC And NAPIT engineers
Fully compliant documentation
New Electrical Installations We Carry Out
New Lighting Circuit Design and Installation
New circuits are RCD-protected to BS 7671:2018+A2:2022, covering downlighter schemes, outdoor lighting circuits, and full lighting layout rewires. An EIC is issued for every new circuit, regardless of scale.
LED Conversion and Dimmer Compatibility
Whole-property LED conversion requires correct driver specification and dimmer compatibility assessment before any fitting is changed. Getting this step wrong is the single most common cause of post-conversion flickering and nuisance tripping which is why we assess the circuit before specifying parts, not after.
Consumer Unit Replacement and RCBO Upgrades
Consumer unit replacement is Part P notifiable, submitted to Building Control under our NICEIC or NAPIT registration, and certified with an EIC. High-integrity RCBO boards are increasingly relevant for properties running EV chargers or multiple smart devices, where shared RCD protection causes nuisance tripping across unrelated circuits. See our dedicated consumer unit installation London page for board types and full pricing.
Extractor Fan and Ventilation Installation (Part F Compliance)
New fan installation is required under Part F of the Building Regulations for bathrooms, shower rooms, and kitchens without adequate ventilation. Humidity-sensing models are fitted as standard where no openable window exists, and existing switch-activated fans can be upgraded to humidity-sensing control during the same visit.
Immersion Heater and Dedicated Circuit Installation
New dedicated 20A circuits, correctly rated heating elements, and programmable timer switches element mis-sizing is a common error from non-specialist fitting, which we specifically check against the cylinder specification before installation.
Full and Partial House Rewiring
Certified with an EIC and notified to Building Control. We have specific experience working around original features in older London housing stock during partial rewires, coordinating with other trades where structural or decorative work overlaps with the electrical scope.
Underfloor Heating DiaHeating Control and Smart Thermostat Installationgnostics and Repair
Programmable and smart thermostats, multi-zone control for larger or multi-occupancy properties, and zone valve installation fitted and commissioned, not just physically mounted, since a thermostat that is not correctly commissioned rarely performs as expected.
Certificates We Issue EIC, Minor Works, and Re-Test Certificates
Every installation that requires it is issued the correct certificate on completion: an EIC for new circuits and consumer units, a Minor Works Certificate for additions to existing circuits, and a re-test certificate following EICR remedial work confirming the installation is now satisfactory.
Heating Control Repairs
Thermostat and programmer faults, zone valve motor failures, and wiring connection issues between thermostat, programmer, and boiler terminal block are diagnosed and resolved, with replacement fitted only where the existing control has genuinely reached end of life.
How We Charge No Work Without Your Agreement First
Diagnosis and minor repairs are typically resolved and invoiced on the first visit. Where parts are needed or the scope expands beyond what was originally reported, we confirm the additional cost with you before continuing nothing reaches the invoice without prior agreement, which removes the most common source of dispute on electrical work.
Getting a Written Quote Before Work Begins
For larger installation projects, a written quote is provided before any work starts, based on a confirmed scope rather than an estimate over the phone. This matters most on rewires and consumer unit upgrades, where the final cost depends on access and existing wiring conditions that can only be confirmed in person.
If your property also needs an Energy Performance Certificate alongside electrical work, see our Commercial EPC London or domestic EPC services.
Pricing answers “what will this cost” the next section answers “who is this actually for,” since the right approach differs significantly between a homeowner and a portfolio landlord.
Who We Work For
The same electrical repair or installation can mean very different things depending on who’s commissioning it: a homeowner wants the fault gone, a landlord wants documentation, and a commercial client wants minimal disruption. Across every category below, the work is carried out under the same NICEIC and NAPIT dual accreditation, so the certification standard doesn’t change depending on the size of the job.
Domestic Homeowners: Repairs and new installations across all property ages, with an EIC or Minor Works Certificate issued for every notifiable job and Part P handled through our dual registration so the paperwork is sorted without you needing to chase it separately.
Private and Portfolio Landlords: EICR inspection, EICR remedial works, PAT testing, and reactive repairs from a single contractor, with a written report after every visit. For portfolio landlords specifically, working with one dual-registered contractor across multiple properties means consistent documentation regardless of which property a mortgage or insurance check happens to focus on.
HMO Operators and Licensing Compliance: Room-by-room fault finding with minimal disruption to tenants, plus communal-area testing and documentation suitable for borough HMO licensing submissions written reports are provided as standard, not as an optional extra, since HMO compliance depends on having that paper trail available.
Commercial and Mixed-Use Premises
Office, retail, and mixed-use electrical repair and installation work to BS 7671 commercial standards, including PAT testing with a compliance-format written register suitable for workplace health and safety requirements.
Portfolio landlords managing compliance across several properties may also find our landlord electrical safety certificate page useful for the wider legal obligations involved.
Knowing who we work for is one form of evidence what past clients actually experienced is another. The next section covers both.
Our Accreditations, Insurance and Compliance Standards
NICEIC and NAPIT Registration How to Verify Us: Both registrations are independently verifiable on the NICEIC public register and NAPIT public register respectively; we had encouraged anyone comparing contractors to check this directly rather than taking accreditation claims at face value, since not every “NICEIC approved” claim online is current.
BS 7671 and Part P Compliance: All installation and testing work follows BS 7671:2018+A2:2022, the current edition of the IET Wiring Regulations, and Part P notifiable work is submitted to Building Control via our competent person scheme registration as standard.
Public Liability Insurance and Calibrated Test Equipment: Public liability insurance of at least £5 million per occurrence is held as standard, and all test equipment used on-site is calibrated, with certificates available on request; this matters because a diagnosis is only as reliable as the equipment used to reach it. Credentials answer “can we be trusted with the certificate” the next section answers the practical questions people ask before booking.
Frequently Asked Questions About Electrical Repairs and Installation
How Quickly Can You Attend?
Booking turnaround depends on the urgency described. Burning smells, sparking sockets, or a breaker that won’t reset are treated as priority callouts; routine repairs and installation work are typically scheduled within a few working days. Call to check current availability for your postcode.
Will I Receive a Certificate for the Work?
Yes, for anything notifiable under Part P new circuits, consumer unit replacement, and work in bathrooms or kitchens. We issue an EIC or Minor Works Certificate as appropriate and handle Building Control notification through our NICEIC or NAPIT registration. Like-for-like repairs outside special locations don’t require certification unless specifically requested.
Why Does Liviosiv Hold Two Accreditations Instead of One?
Most contractors register with a single competent person scheme. Holding both NICEIC and NAPIT means our certification is recognised regardless of which scheme a lender, insurer, or local authority checks, and our work is independently assessed against both bodies’ technical standards.
Does My Extractor Fan Need Replacing or Just Repairing?
Usually just repairing. In most callouts the fault is a failed humidistat sensor rather than the motor we check the component before quoting for a full unit replacement.
Does Underfloor Heating Repair Always Mean Lifting the Floor?
Rarely. Most UFH faults sit in the thermostat or floor sensor, both replaceable without floor access. We confirm a genuine cable fault using insulation resistance testing and thermal imaging before any flooring is disturbed.
Do You Work on Commercial as Well as Residential Properties?
Yes offices, retail units, and mixed-use buildings, alongside domestic, rental, and HMO properties, across Greenford and the wider London area.
I Have C1 or C2 EICR Faults How Fast Can These Be Fixed?
Remedial work is typically scheduled to complete well within the legal 28-day deadline. See our EICR remedial works page for the full process and re-test certification.
What Areas of London Do You Cover?
Greenford and all London boroughs. Call or email to confirm coverage for your specific postcode. See our electrician London page for the full list of areas covered.
Accrediations
contact@liviosiv.co
