18th Edition (BS 7671) | Metal-Clad Unit | Full RCD Protection | Electrical Installation Certificate Issued
Pristine Gas Ltd’s certified electrician Matt replaces outdated fuse boards with modern 18th Edition compliant, metal-clad consumer units across London from £450. Full RCD protection reduces fire and electric shock risk, and an Electrical Installation Certificate is issued on completion. We cover Holborn WC1N, Islington N1, and all London postcodes. Call 07472 251465 to book.
A consumer unit (also known as a fuse box or fuse board) is the central distribution point for all electrical circuits in your home. An outdated unit — particularly one containing fuse wire, made from plastic, or lacking RCD protection — represents a significant fire and electric shock risk. Upgrading to a modern 18th Edition compliant unit is one of the most important electrical safety improvements you can make.
Matt works alongside our gas engineer Ralf on combined jobs and also covers electrical fault finding and emergency electrical call-outs across all London postcodes.
Pristine Gas Ltd’s certified electrician Matt replaces outdated fuse boards with modern 18th Edition compliant consumer units across London from £450. Signs you need one: fuse wire, no RCD protection, warm fuse board, flickering lights. Call 07472 251465.
A consumer unit is the main electrical distribution board in your property. It receives the incoming electricity supply and distributes it to individual circuits throughout the building via circuit breakers (or older fuse wire). It also contains the RCD (residual current device) that trips the supply if a fault or electric shock is detected.
Older consumer units — particularly those installed before 2005 — typically use fuse wire rather than modern circuit breakers, are made from plastic rather than the metal casing now required, and lack adequate RCD protection. These units are not compliant with current wiring regulations and present a significantly higher fire and shock risk than modern equivalents.
A residual current device (RCD) monitors the flow of electricity through a circuit. If it detects a fault — such as current flowing through a person — it cuts the power in as little as 30 milliseconds. Without RCD protection, a fatal electric shock from a faulty appliance is far more likely.
Modern 18th Edition consumer units include RCD protection on all circuits, not just some. This is one of the key safety improvements over older split-load and non-RCD boards.
The 18th Edition refers to the current edition of BS 7671, the UK’s wiring regulations published by the IET. Introduced in 2018, it requires consumer units to be metal-clad to prevent fire spread, and specifies full RCD protection for all circuits. All consumer unit replacements by Matt comply with the 18th Edition and are certified on completion.
Matt carries out every consumer unit replacement to 18th Edition specification, testing every circuit before issuing the Electrical Installation Certificate.
Matt assesses the existing consumer unit, checks the incoming supply, and counts the circuits to be protected. He confirms the right specification for your property and provides a fixed price before any work begins.
The electricity supply is isolated at the meter for the duration of the replacement. Matt advises the expected power-off period before starting — typically 2 to 4 hours for most domestic properties.
The old consumer unit is removed and the new 18th Edition compliant, metal-clad unit is installed. All circuits are reconnected to the new board and clearly labelled. The supply is restored and the system powered up.
Matt tests every circuit in the property to confirm correct operation and RCD protection. The Electrical Installation Certificate is issued before leaving — the document you need for building regulations compliance, insurance purposes, and property sales.
Consumer unit replacement with Pristine Gas Ltd starts from £450. The exact price depends on the number of circuits and the specification of the new unit. Call 07472 251465 for a fixed quote before you book.
Call 07472 251465 to speak with Matt or leave a WhatsApp message. Same-week appointments available across WC1N, N1, NW8, W9, NW4, and all London postcodes.
“Ralf came out promptly to look at the boiler issue and quickly diagnosed and fixed the problem. During the visit, he also identified an electrical issue that needed attention. Matt then attended and efficiently sorted out the electrical problems. Both were professional, knowledgeable, and reliable throughout. Excellent service from start to finish — highly recommended.”
Google Review — Electrical Work, London
Key signs include: your consumer unit contains fuse wire rather than circuit breakers, it is made from plastic rather than metal, it has no RCD protection, it feels warm to the touch, circuit breakers trip frequently, or an electrician has flagged it during a recent EICR. Call 07472 251465 for an assessment from Matt.
The 18th Edition is the current edition of BS 7671, the UK’s wiring regulations. It requires consumer units to be metal-clad (to prevent fire spread), include full RCD protection on all circuits, and be installed and tested by a qualified electrician. All Pristine Gas Ltd consumer unit replacements comply with the 18th Edition and an Electrical Installation Certificate is issued on completion.
Most consumer unit replacements are completed in one day. Matt will isolate the supply, remove the old unit, fit the new 18th Edition compliant consumer unit, test all circuits, and issue the Electrical Installation Certificate before leaving. The power-off period is typically 2 to 4 hours for a domestic property.
Yes. The electricity supply must be isolated for the duration of the consumer unit replacement for safety. Matt will advise the expected power-off duration before starting so you can plan accordingly. In most domestic properties the power is off for between 2 and 4 hours, after which all circuits are restored and tested.
Pristine Gas Ltd’s certified electrician Matt covers all London postcodes for consumer unit replacement. Based in Holborn WC1N, primary service areas include Islington N1, Maida Vale W9, St John’s Wood NW8, Brent Cross NW4, Shepherd’s Bush W12, and Acton W3.
We also cover NW1, NW9, NW10, W8, W10, W12, W14, E8, E14, E16, N13, SW6, SE11, and St Albans AL1.
18th Edition compliant fuse board upgrade from £450. Metal-clad unit. Full RCD protection. Electrical Installation Certificate issued same day. All London postcodes.
Fixed price before we start. No call-out fee 8am–8pm.
