Light Fitting & Lighting Installation in Merton

About light fitting & lighting installation in Merton

Lighting installation covers everything from replacing a single pendant fitting to a full room redesign with recessed downlights, dimmer controls, and LED conversion. The electrician plans the circuit layout, runs cables through the ceiling void, cuts holes for downlights or mounts surface fittings, and connects everything to a properly rated lighting circuit. Modern LED lighting dramatically reduces energy consumption while improving the quality and control of light in your home.

Lighting circuits operate at 6A and use 1.0mm² or 1.5mm² cable — different from socket circuits. Incorrectly wired lighting causes flickering, overheating, and fire risk, particularly with recessed downlights where heat dissipation and fire-rated housings are critical. Work in bathrooms and outdoors is notifiable under Part P. Even in other rooms, modifications to lighting circuits must comply with BS 7671 to be safe and insurable.

What's included

• Lighting design consultation and circuit planning
• Supply and installation of light fittings (downlights, pendants, or surface mounts)
• Cable run from switch to each light point
• Dimmer switch installation and LED compatibility check
• Fire-rated downlight housings where required
• Intumescent covers for downlights penetrating fire barriers
• Switch plate replacement or relocation
• Circuit testing to BS 7671 standards
• Minor Electrical Installation Works Certificate or EIC as appropriate

Typical cost

Light Fitting & Lighting Installation in Merton typically costs £100–£350 per room. Every job is different — describe what you need and a qualified electrician will quote you directly.

See full pricing breakdown →

Regulations & standards

• Part P of the Building Regulations (Approved Document P): Lighting work in bathrooms (zones 0, 1, and 2), kitchens, and outdoors is notifiable. New lighting circuits anywhere in the home are also notifiable. The work must be carried out by a registered electrician or inspected by Building Control.
• BS 7671:2018+A2:2022 (IET Wiring Regulations): All lighting installations must comply with the Wiring Regulations, including circuit protection (6A MCB), cable sizing, and the specific requirements for bathroom zones (Section 701).
• BS 476 / BS EN 1365 — Fire Resistance: Where downlights penetrate a ceiling that acts as a fire barrier (most ceilings between floors), fire-rated housings must be used to maintain the fire integrity of the ceiling. Intumescent covers are required above the fitting.