B22 (BC) LED Filament Bulb 5W 550lm Dimmable - Warm White 2700K

This is a 5W LED filament bulb with a B22 bayonet cap, the push-and-twist fitting found on most older British pendants and table lamps. The glass is clear and the shape is the traditional GLS profile, so the four upright filament strips sit in plain view and give the soft point of brightness people expect from an old style bulb. It draws 5W and gives 550 lumens at 2,700K, a warm white that reads as yellow-toned rather than blue. The pack puts it against a 40W incandescent.

Clear glass suits fittings where the bulb is part of the look: an open pendant over a kitchen table, a bare flex and ceiling rose, a caged or glass shade, a table lamp with a narrow drum that leaves the top open. The 320 degree beam angle means light goes out sideways and upward as well as down, so it fills a room evenly rather than pooling in one spot. At 550 lumens it is a comfortable level for a bedside lamp, a hallway pendant or a pair of wall fittings in a sitting room, rather than a single main light for a large kitchen.

It is dimmable, which on a filament LED is worth checking at the dimmer rather than at the bulb: a trailing edge or LED-rated dimmer will hold a low level steadily, while an older resistive dimmer built for 40W and up may flicker or buzz with a 5W load. The energy label rates it E, and the pack prints both a 15,000 hour life and a 15 year lifespan. Each listing is one bulb, ordered in multiples of 12. It sits alongside our wider range of LED bulbs in B15 (SBC) and GU10 fittings, including candle shapes in the same 2,700K warm white.

Which light fittings take a B22 bulb?

B22 is the bayonet cap used on a great many British pendants, table lamps and wall lights. Look at the old bulb: two small pins on a smooth metal cap means bayonet, a spiral thread means a screw cap instead.

How bright is 550 lumens in everyday terms?

The pack rates it as a replacement for a 40W incandescent, so it suits a bedside lamp, a hallway pendant or a pair of wall lights rather than lighting a large room on its own.

Will it dim properly on my existing dimmer?

The bulb itself is dimmable. Best results come from a trailing edge or LED-rated dimmer; an older dimmer designed for filament loads may have a minimum wattage well above the 5W this bulb draws.

What does 2,700K warm white actually look like?

It is the warm, slightly yellow light people associate with old incandescent bulbs. It flatters wood, warm paint colours and skin tones, and reads as restful in the evening rather than clinical.

Will the filaments show when the light is on?

Yes. The glass is clear and the four upright filament strips are on view, which is the point of a filament bulb in an open pendant, a caged shade or a lamp with no diffuser.

How many do I have to buy?

One listing is one bulb, and the minimum order is 12, sold in multiples of 12. That suits fitting out a whole house or keeping spares for identical fittings.