Electrical Repairs London: Complete Cost Guide for 2025

Electrical Repair Costs in London: 2025 Price Guide

Understanding what electrical repairs cost in London before you call an electrician puts you in a much stronger position. Prices vary considerably depending on the nature of the fault, the time of day, and the location of the property within Greater London. This guide sets out current market rates for the most common electrical repair jobs across the city.

Call-Out Rates

Most London electricians charge a call-out fee that covers the first hour of labour and the cost of travelling to your property. Standard daytime call-out rates start from £80 for the first hour. Out-of-hours rates — evenings, weekends, and bank holidays — typically start from £120 to £150. Some firms quote a fixed labour rate per job rather than an hourly rate; this can work in your favour for straightforward jobs that take less than an hour.

Socket Replacement Cost

Replacing a standard single or double socket with a new socket of the same type is one of the most common electrical jobs in London homes. Expect to pay £60 to £120 per socket, including labour and materials. Upgrading to a USB-A or USB-C socket costs slightly more — typically £80 to £140 — because the socket itself costs more. If several sockets are being replaced at the same visit, electricians usually offer a reduced rate per socket because the call-out cost is shared across the work.

Light Fitting Replacement

Replacing a ceiling light fitting or pendant is straightforward in most London properties. Standard replacement costs £50 to £100 per fitting, including labour. If the existing wiring requires an adaptor plate or if the work is in a bathroom where zone restrictions apply, the cost rises to £80 to £150 because the work becomes notifiable under Part P of the Building Regulations.

RCD Fault Diagnosis

An RCD that keeps tripping, or one that will not reset, requires diagnostic work to locate the fault on the affected circuit. A diagnostic visit from an NICEIC-registered electrician in London typically costs £80 to £150 for the diagnosis alone, before any remedial work. If the fault is traced to a faulty appliance, the repair cost ends there. If the fault is in the wiring, additional remedial costs apply depending on the extent of the work required.

Circuit Breaker Diagnosis and Replacement

A circuit breaker that trips repeatedly under normal load, or one that will not reset, needs to be investigated. Diagnostic and replacement of a single MCB (miniature circuit breaker) in a consumer unit costs £60 to £120 in London, including the part. If the consumer unit itself is failing or the busbar shows signs of arcing, a full consumer unit replacement will be recommended.

Emergency Electrical Repair

Emergency call-outs — total loss of power, a burning smell from an outlet, sparks at a socket — attract a premium rate. Emergency electrician costs in London typically run from £120 to £200 for the first hour out of hours, with subsequent hours charged at £60 to £100. Always verify that the electrician is NICEIC or NAPIT registered before authorising any work, as unregistered electricians cannot self-certify Part P notifiable work.

Consumer Unit Upgrade

A full consumer unit upgrade — replacing an old rewirable fuseboard with a modern dual RCD or RCBO consumer unit — is one of the most impactful electrical investments in an older London property. Costs for a consumer unit upgrade in London range from £600 to £1,200, including supply of the unit, installation, and the required Electrical Installation Certificate. The wide price range reflects the number of circuits, the accessibility of the existing installation, and whether any remedial work on circuits is needed at the same time.

Factors Affecting the Price of Electrical Repairs in London

• London location premium: Central London and high-cost boroughs such as Kensington, Chelsea, and Westminster attract higher labour rates than outer boroughs.
• Out-of-hours surcharge: Evening and weekend work typically costs 30 to 50 percent more than standard daytime rates.
• Parts cost: Branded consumer units, RCBO breakers, and smart sockets are more expensive than standard equivalents.
• Travel time: Some electricians charge for travel time beyond a certain radius, which can add £20 to £40 to a job in outer London locations.
• Part P certification: For notifiable work, the cost of self-certification to the local building control authority is typically included in the quote from a registered electrician but should always be confirmed.

Prestige Engineers provides upfront pricing for all electrical repairs across London. All our electricians are NICEIC registered and can self-certify Part P notifiable work. Contact us for a fixed-price quote before any work begins.