Light Switches Buying Guide

Choose the number of gangs to match the number of separate lights or circuits the switch position controls — one gang per circuit. A single light needs a 1-gang switch; a room where you want the main light and a separate set of wall lights on individual switches needs a 2-gang; a 3-gang controls three, and BG offers larger multi-gang plates for hallways, kitchens and open-plan spaces that switch several circuits from one point. The gang count is purely about how many switches sit on the faceplate, independent of whether each is 1-way or 2-way. A practical tip: where a wall plate must control many circuits in a tailored arrangement, a grid switch system (see below) lets you build a custom multi-gang layout rather than relying on a fixed off-the-shelf plate.

Choose the switching type by how many places control the same light. A 1-way switch turns a light on and off from a single location and suits most rooms. A 2-way switch lets two switches control the same light — essential for stairs and landings, and for long rooms or hallways with an entrance at each end — wired so either switch toggles the light regardless of the other's position. An intermediate switch is added between two 2-way switches when you need three or more control points for one light, such as a long landing or a room with three doorways. Most BG 2-way switches can also be used as 1-way, which is why two-way is a common default. Wire counts and connections differ between the types, so confirm the existing wiring before swapping.

The style is the part you operate, and it is mainly an aesthetic and ergonomic choice rather than an electrical one. Rocker switches are the familiar UK plate switch that pivots up and down, are the most common, and give a clear positive action. Toggle switches use a small protruding lever for a traditional or heritage look that pairs well with metal and decorative finishes. Push switches operate with a momentary press and are typical of dimmer and grid modules, where a press toggles the light and a press-and-hold adjusts brightness. All three are available across BG ranges in appropriate finishes, so pick the action you prefer and then check it is offered in the gang count, switching type and finish you need. The style does not change the wiring requirements.

For dimmable LED lighting, choose an LED-compatible trailing-edge dimmer rated for your load. Trailing-edge (leading-the-shift) dimmers are designed for modern low-wattage LED lamps and give smoother, quieter control than older leading-edge dimmers built for incandescent loads. Two points matter: the lamps must be marked dimmable, and the dimmer must be rated for the connected wattage — LED dimmers state a minimum and maximum LED load, and running below the minimum or above the maximum causes flicker, buzzing or no dimming at all. Dimmers also come in 1-way and 2-way versions, so for a staircase or two-point circuit pair a 2-way dimmer with a 2-way switch. BG offers trailing-edge LED dimmers across its ranges; check the load rating against the total wattage of all lamps on the circuit before ordering.

A grid switch system lets you build a custom multi-gang plate from individual modules, and you should use it where a fixed off-the-shelf switch plate cannot give the exact mix you need. Instead of buying a pre-set 1, 2 or 3-gang switch, a grid uses a mounting frame and a faceplate into which you clip separate modules — switches, 2-way switches, dimmers, blanks and other functions — to create a tailored layout for kitchens, utility rooms, hallways and commercial fit-outs. This is ideal when one position must control several different circuits, or mix switch types and functions on a single neat plate. BG supplies grid components and faceplates in finishes to match its plate ranges. Plan the module layout first, allow for a deeper back box because populated grids sit further back, and label the circuits for whoever uses the room.

Choose the BG range and finish to suit the room's look, then match the plate style and back-box depth. Nexus white moulded is the cost-effective standard white plastic switch for general use; Nexus Metal adds metal finishes on a standard (visible-screw) plate; Evolve is BG's premium decorative range with softly rounded plates; and the screwless flat plate options give a clean face with no visible fixing screws. Finishes across these ranges include white moulded, brushed steel, matt black, polished chrome, black nickel, antique brass and black chrome, so you can match sockets and other accessories throughout a property. On plate style, a standard plate fixes with two visible screws while a screwless plate clips over a base for a flush, screw-free finish. Crucially, check back-box depth: 25mm is fine for basic switches, but allow 35mm for dimmers and metal plates, which carry more components and sit deeper.