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Buying light bulbs with the right cap type has never been easier, thanks to our handy visual guide, which you can find below. Whether you need a bulb with an E14 small Edison screw cap for a desk lamp, or a GU10 spotlight for the kitchen, you should be able to find the right one for you. Just compare the base or cap of the bulb you're replacing with the images below, and click through to start shopping.
If you need any further help to find the right bulb, please contact our friendly customer services team, who will be happy to help.
BC/B22d ‘push-and-twist’ type of cap, 22mm diameter. found in most standard fixtures and lamps.
Also known as a small bayonet cap or B15d SBC. 15mm diameter
Also know as ES/E27 this is one of the most common light bulb cap types, 27mm diameter.
SES Screw cap, also know as E14/SES. Has a 14mm diameter and is often found in smaller lamps and light fittings.
MES/E10 Cap/Base type (10mm). Also known as Miniature Edison Screw.
Known as a GU10 because of the 10mm between the centres of each pin. These bulbs are used spotlight ceiling fixtures.
GU5.3 Base. Also know as MR16. Used in low voltage (12v) spotlight ceiling fixtures.
GU4 (MR11) lamps are commonly used in 12v spotlights fixtures. The 4 in GU4 refers to the 4mm between the two pins.
Compact bi-pin or 2pin capsules. Suitable for a variety of applications
Miniature low voltage capsule with 2-pin G4 fitting. Also known as M42 light bulbs
78mm and 118mm fittings R7s. Commonly found in floodlights and uplights.
Slim profile lamp. Designed for surface mounted and recessed cabinet lighting