Knightsbridge 13A Double Sockets — Curved Edge, Square Edge, Flat Plate and Screwless for UK Electricians

The 13A double socket is the workhorse of every UK electrical first fix and second fix. Whether you are wiring a new build, rewiring a kitchen or upgrading a lounge with a designer finish, Knightsbridge manufactures a 13A twin switched socket to suit the job, the client and the budget. Their range runs from robust curved-edge van stock through to flat plate brushed chrome and screwless designer plates — all wired to the same familiar twin-earth double-pole switched configuration and all backed by consistent quality from one of the UK's leading wiring accessories brands.

At APM Electricals we stock the full Knightsbridge 13A double socket range. This guide covers four key variants that cover the main trade use cases: budget domestic, modern square edge, premium flat plate and contemporary screwless designer. All prices include VAT.

Choosing the Right Knightsbridge 13A Double Socket

Knightsbridge organise their socket range around face style rather than technical spec — the internals are broadly consistent across tiers. The four main styles you will encounter in trade work are:

• Curved Edge — the traditional rounded-corner face found across most UK domestic wiring since the 1980s. Cheap, stocked everywhere, universally accepted.
• Square Edge — a flush, sharper profile that has become the default modern domestic specification. Cleaner look, same price bracket.
• Flat Plate — a slim metal plate in chrome, brushed chrome, polished brass or matt black. No visible screws on most variants. Popular for kitchens, living areas and higher-spec refurbishments.
• Screwless — a removable front plate that clips over a hidden back plate. Fully concealed fixings. Standard choice for bathrooms, open-plan living and any room where aesthetics matter to the client.

Visit our trade counter or order online for next-day delivery: 24 Western Avenue, Acton, London W3 7TZ — call 020 8702 8080.

All four are double-pole switched, BS 1363 compliant and carry twin earth terminals — essential for compliance with BS 7671 wiring regulations. The twin-earth provision allows you to earth the metalwork of surface-mounted boxes as well as the socket itself without returning to the consumer unit.

Knightsbridge 13A Double Socket Range — Four Products Compared

Knightsbridge 13A 2G DP Switched Socket with Twin Earths Curved Edge

The curved-edge double socket is the definitive UK domestic workhorse. Knightsbridge's version is moulded in white thermoplastic with a traditional rounded-corner face and standard 86 x 86mm plate size. It fits directly to a 35mm deep single-gang back box using standard M3.5 screws and wires to conventional three-terminal connections: L, N and E.

At £3.22 inc VAT this is a competitive van-stock price for a branded Knightsbridge fitting. It is well suited to rental property refurbishment, social housing contracts and budget domestic rewires where specification calls for standard white sockets throughout. The twin-earth connection is already on board, so you are covered for both box and socket earthing without adaptors.

If you are ordering in volume, this sits neatly as the default socket for a full-house first fix, allowing you to keep a consistent brand across switches and sockets.

Knightsbridge 13A 2G DP Switched Socket with Twin Earths Square Edge

The square-edge profile has become the de facto standard for new-build and mid-market refurbishment across the UK. The sharp corner line reads as more contemporary than the curved-edge alternative and clients increasingly specify it even on standard white sockets. Knightsbridge's square-edge double socket retains the same BS 1363 double-pole switched internals and twin-earth terminals, with a slim flat face that sits flush against plasterwork.

At £3.99 the price premium over curved-edge is minimal — less than 80p per socket — and most electricians now stock square-edge as standard rather than curved-edge for new domestic work. It wires identically, fits to the same 35mm back box and takes standard M3.5 fixings. Rockers are white, matching contemporary decorating schemes.

For kitchen and bedroom circuits where the client wants a cleaner finish without a designer-plate budget, square-edge is the answer.

Knightsbridge 13A 2G DP Switched Socket with Twin Earths — Brushed Chrome Flat Plate, White Insert

Knightsbridge's flat-plate range is the natural step up for kitchens, open-plan living areas and refurbishments where the client has chosen brushed chrome or stainless steel for other fittings. The flat plate is a slim metallic face plate in satin brushed chrome with white rocker inserts — a combination that reads cleanly against pale plasterwork, grey tiles and kitchen splashbacks.

The face is slimmer than the plastic ranges, lending a premium installed appearance, and the brushed chrome finish is durable under daily use. Internally it wires to the same DP switched double-socket configuration with twin-earth terminals. Flat-plate sockets install to a standard 35mm back box but benefit from a metal box where possible, as the tighter fixing screws pull the plate more cleanly.

At £13.50 this is a reasonable designer-plate price for a branded fitting. Trade electricians typically use this range for kitchen circuits, utility rooms and any space where the client's fittings budget is above minimum-spec. It is available from APM Electricals for next-day delivery.

Knightsbridge 13A 2G DP Switched Socket with Twin Earths — Screwless Matt White

The screwless range is Knightsbridge's contemporary answer to the hidden-fixing market. The double socket front plate clips magnetically or by hidden locating pins over a separate back trim, eliminating visible fixing screws entirely. The result is a flush, uninterrupted white face with a slight matt texture — one of the cleanest finished appearances available in UK wiring accessories below £20.

Screwless sockets are specified on open-plan living areas, bedrooms and any location where the client expects a premium finish. The matt white finish avoids the glare of gloss white and coordinates with modern Matt White paint palettes. Twin-earth terminals are included as standard. The back plate fixes to a 35mm single-gang box using standard M3.5 countersunk screws before the front face clips into place.

At £15.99 this is well positioned in the mid-premium bracket — more than standard white sockets but comparable to many branded screwless alternatives from other manufacturers, and with the build quality and warranty of a Knightsbridge product.

Wiring Knightsbridge 13A Double Sockets — What Trade Electricians Need to Know

All four sockets above share the same wiring requirements. Each has three terminals per socket position: Live (L), Neutral (N) and Earth (E). The twin-earth provision means there are two earth terminals on the back, allowing you to earth both the socket mechanism and the back box (where a metal box is used) without a separate earth link. This satisfies the BS 7671 requirement for earthing exposed metalwork without running a separate CPC loop.

Standard installation is to a 35mm deep single-gang flush box or a 35mm surface-mounted back box. Knightsbridge flat-plate and screwless variants can look tight on a 25mm box — 35mm is the trade recommendation for a clean install.

Cable entry is from the back in all cases; there are no cable knockouts on the side of Knightsbridge's switched sockets. Ensure back box entry knockouts are aligned to your cable drop before plastering in.

Knightsbridge 13A Sockets at APM Electricals

APM Electricals stocks the full Knightsbridge 13A socket range with next-day delivery across the UK. Whether you are pricing a full-house rewire on curved-edge, specifying flat plate for a kitchen circuit or quoting screwless for a high-spec renovation, we hold stock across the range.

Trade accounts are available — contact us for pricing on volume orders. We also stock matching Knightsbridge switches, USB sockets, FCUs and grid systems to complete your Knightsbridge specification.

• Knightsbridge Curved Edge 2G DP Switched Socket
• Knightsbridge Square Edge 2G DP Switched Socket
• Knightsbridge Flat Plate Brushed Chrome 2G DP Switched Socket
• Knightsbridge Screwless Matt White 2G DP Switched Socket

Visit our trade counter or order online for next-day delivery: 24 Western Avenue, Acton, London W3 7TZ — call 020 8702 8080.