Fuse Box Replacement in London
If your fuse box is outdated or keeps tripping, it may be time for a replacement. We install modern consumer units that meet the latest safety standards, carried out by fully qualified, Part P and City & Guilds certified electricians. Enjoy reliable protection for your home or business with clear, upfront pricing.
- Modern consumer unit upgrades for improved safety and reliability
- Full RCD protection included to help prevent electric shocks
- 7-day availability, including public holidays
- Fast, tidy installation with minimal disruption to your home
Why Replace Your Old Fuse Box?
An old fuse box isn’t just outdated, but also a safety risk. Most older units use rewirable fuses instead of modern circuit breakers, and they usually don’t include RCD protection. That increases the chance of electrical shock and fire.
Modern consumer units also distribute electricity and automatically cut off power in the event of a fault. However, they do it much more safely and efficiently.
Here’s how they compare:
Old fuse box:
- Uses fuse wire that melts when overloaded
- No RCD protection
- Often non-compliant with BS 7671 regulations
- Faults can be hard to identify
Modern consumer unit:
- Uses resettable MCBs and RCBOs
- Includes RCD protection
- Fully compliant with Part P and BS 7671
- Easier to manage and label
If your property still has an older fuse box, upgrading ensures your home or business is safer, legally compliant, and easier to manage.
Common Signs You Need a Fuse Box Replacement
Not sure if your fuse box needs replacing? These are some of the most common warning signs we see in London homes and flats:
Fuses keep blowing – A clear sign your system is overloaded and can’t handle modern electrical demands.
Flickering lights – This often points to loose connections or worn-out wiring behind your fuse board.
Rewirable fuses – If you’re still using fuse wire instead of circuit breakers, your board is outdated and unsafe.
No RCD protection – Without RCDs, there’s a much higher risk of electric shock and fire.
Scorch marks or buzzing – Physical damage or unusual sounds from the fuse box are major red flags.
Upgrading or renovating – New appliances, EV chargers, or home extensions often require a modern consumer unit with higher capacity.
If you’ve spotted one or more of these issues, it’s time to upgrade your fuse box to a safer, compliant consumer unit. Our qualified London electricians can replace yours quickly — call today for a clear, upfront quote.
Benefits of Upgrading Your Fuse Box
Replacing your old fuse box with a modern consumer unit isn’t just about meeting regulations — it’s about improving safety, efficiency, and peace of mind. Here’s why it matters:
Enhanced Safety – Modern consumer units reduce the risk of electric shocks and electrical fires. They trip instantly when a fault is detected, keeping you and your home safe.
Regulation Compliant – All installations meet BS 7671 Wiring Regulations and Part P of the Building Regulations — essential for legal and insurance purposes.
Built for Today’s Demands – From EV chargers to smart home tech, modern consumer units handle today’s electrical loads far better than outdated fuse boxes.
Insurance Friendly – Many insurers require a compliant consumer unit. Replacing yours may even help reduce your premiums.
Certified & Hassle-Free – We provide full testing, certification, and building control notification — all handled by our Part P-approved team.
Emergency or Last-Minute Rewiring?020 4600 5848
What’s Included in Your Fuse Box Replacement?
When you book a fuse box replacement with us, everything you need is covered — no hidden extras or surprises.
Certified Installation
Installed by fully qualified, Part P-approved electricians
Full Testing & Certification
Includes complete safety testing and your Electrical Installation Certificate (EIC)
Building Control Notification
We handle all paperwork with your local council to ensure Part P compliance
Parts & Labour Included
Your quote covers everything — the new consumer unit, materials, and professional labour
Certifications & Compliance
At Electricians London 247, we guarantee that all fuse box replacements are done to the highest industry standards. Our team is fully:
- City & Guilds Qualified
- Part P Compliant (Building Regulations)
- £5M Public Liability & Professional Indemnity Insurance
We handle all Building Control notifications and provide a full Electrical Installation Certificate upon completion.
Fuse Box Replacement Pricing
| Service Type | Estimated Price (Inc. VAT) |
|---|---|
| 🔧 Fuse Box Replacement (Standard 6-Way Consumer Unit) | £450 - £650 |
| 🛡 RCBO Consumer Unit | £650 – £950 |
| ⚡ High Integrity Consumer Unit | £500 – £1000 |
| 🏢 Full Rewiring (2-Bedroom Flat) | £3,800 – £7,500 |
| 🏡 Full Rewiring (3-Bedroom House) | £6,000 – £10,000 |
| 📄 Electrical Installation Condition Report (EICR) | From £150 |
Types of Consumer Units We Install
We offer a range of consumer units to suit different property sizes and electrical needs. During your inspection, we’ll advise on the best type for your home — but here’s a quick overview:
Main Switch Consumer Unit
Ideal for smaller homes or flats. One main switch controls all circuits. Cost-effective but basic.
RCBO Consumer Unit
Each circuit is protected by an individual RCBO. If one side trips, the other keeps running. Common in most UK homes.
High Integrity Consumer Unit
Offers dedicated RCBOs for critical circuits (like your fridge or alarms). Best for larger homes or when maximum uptime is needed.
Garage or Outbuilding Units
Smaller consumer units with 2–5 circuits. Perfect for garages, sheds, or external buildings.
We’ll always recommend what’s best for your setup, and all installations are fully tested, certified, and compliant with BS 7671.
How it Works
1. Book & Get a Quote
We inspect your fuse box and send a fixed quote within 48 hours.
2. Certified Installation
Our NICEIC electricians replace your old unit with a modern consumer unit.
3. Testing & Certification
We test all circuits and issue your Electrical Installation Certificate.
4. Building Control Notified
We handle all Part P compliance and notify local authorities.
Why Choose Us for Fuse Box Replacement in London
Trusted by homeowners and landlords across London for safe, compliant, and efficient consumer unit upgrades:
City & Guilds Approved Electricians
All installations are handled by certified professionals with years of hands-on experience.
Upfront Pricing, No Surprises
Transparent quotes that cover everything — parts, labour, testing, and certification.
Fast Turnaround Times
We offer quick response and same-week availability across Greater London.
Part P & BS 7671 Compliant
Your new fuse box is fully tested and certified to meet UK regulations.
Official Certification Included
We issue an Electrical Installation Certificate and handle Building Control notifications for you.
Ideal for Upgrades & Renovations
We regularly replace outdated fuse boxes during home updates, extensions, and safety checks.
Replace Your Old Fuse Box Today:020 4600 5848
Frequently Asked Questions
If you don’t see the answer you need, feel free to get in touch. Use our contact form or email us at hello@electricianslondon247.co.uk — our team is happy to help and will get back to you as soon as possible.
How long does it take to replace a fuse box with a consumer unit?
We typically complete most replacements in 4 to 7 hours, depending on your property and the size of the consumer unit. Smaller flats usually need a 6-circuit unit, while larger homes may require 10–12 circuits, which takes a bit longer.
If rewiring is needed, we’ll let you know — that can take 4 to 9 days depending on the property size.
How much to upgrade a fuse box in the UK?
We offer fuse box upgrades starting from £450 for a standard 6-way consumer unit. For larger installations, like dual RCD or high integrity units, prices range up to £1000 — all inclusive of VAT, parts, and labour. You’ll get certified installation by Part P-registered electricians and a full safety certificate.
Is it worth upgrading your fuse box?
Yes — especially if your current fuse box lacks RCD protection, which is essential for preventing electric shocks and fire risks. Upgrading to a modern consumer unit not only keeps your home safer but also ensures compliance with current UK wiring regulations. We install RCD-equipped units as standard, giving you peace of mind and full certification.
Are old fuse boxes illegal in the UK?
No. Old fuse boxes are not illegal, but they often don’t meet current safety standards. If yours lacks RCD protection or shows signs of wear, we recommend upgrading to improve safety and compliance.
Can you sell a house with an old fuse box in the UK?
Yes, you can sell a house with an old fuse box, but it may raise red flags during surveys or inspections. Upgrading it can boost buyer confidence and help avoid delays in the sale process.
Will my power be off during the replacement?
Yes, your electricity will be temporarily switched off for safety during installation and testing. We’ll keep downtime to a minimum and keep you updated throughout the process.
Do you cover my area?
Yes, we carry out fuse box replacements across Greater London, including:
Clapham, Pimlico, Putney, Camden, Brixton, Wandsworth, Streatham, Chelsea, Wimbledon, and surrounding areas.
Not sure if you’re in our service zone? Just give us a call or send us a message — we’re happy to check.