Explore Bell GLS LED light bulbs for everyday lighting in living rooms, bedrooms, hallways and other areas of the home. Designed as energy-efficient replacements for traditional GLS bulbs, the range includes popular B22 bayonet and E27 Edison screw fittings. Choose from different brightness levels, colour temperatures and dimmable options to suit your room and existing fitting. Find a dependable Bell LED replacement while retaining the familiar shape of a traditional household light bulb.
GLS bulbs have the familiar full-size shape used in lamps and light fittings throughout the home. Bell combines this traditional profile with modern LED technology, offering options for everyday room lighting, decorative fittings and energy-conscious replacements.
Check the Cap
Bayonet or Edison Screw?
Check whether your fitting takes the push-and-twist B22 bayonet cap or the threaded E27 Edison screw cap. They are not interchangeable, even when the bulbs have the same GLS shape.
Compare Lumens
Choose by Brightness
Lumens tell you how much light the bulb produces. When moving from an older incandescent or halogen lamp to LED, use lumens and the stated equivalent wattage rather than comparing LED watts alone.
Set the Mood
Select the Light Colour
Warm white creates a softer domestic atmosphere, while cooler colour temperatures provide a cleaner appearance for task-focused rooms such as kitchens, utility areas and home offices.
Cap Identification
Which GLS Bulb Cap Do You Need?
The quickest way to identify the correct replacement is to remove the existing bulb safely and examine its base.
B22
Bayonet Cap
The B22 cap has two locating pins on opposite sides. It is pushed into the lampholder and twisted to secure it in place.
Also described as BC or B22d
Push-and-twist fitting
Common in UK domestic lighting
E27
Edison Screw Cap
The E27 has a 27mm threaded metal base and is screwed clockwise into the lampholder.
Also described as ES
Threaded screw fitting
Common in ceiling, table and floor lamps
Useful check: GLS describes the shape of the bulb, not its cap. Always check both the GLS shape and the cap reference before ordering.
Light Output
Understanding Lumens and Equivalent Wattage
LED bulbs use considerably less power than older incandescent lamps. The figures below are useful starting points, but always check the stated lumen output on the individual Bell product.
Traditional equivalent
Approximate light output
Typical use
40W
Around 470 lumens
Bedside lamps, table lamps and gentle background lighting
60W
Around 800 lumens
General lighting in bedrooms, halls and living spaces
75W
Around 1,050 lumens
Brighter room lighting and larger domestic spaces
100W
Around 1,500 lumens
High-output lighting for larger rooms and work areas
These are approximate comparisons rather than exact rules. Choose the product by its published lumen output and check that its physical size and maximum wattage are suitable for your fitting.
Appearance and Atmosphere
Choose the Finish and Colour Temperature
Opal Finish
Soft, Diffused Light
An opal or frosted bulb helps soften the light source and reduce visible glare. It is a practical choice for open shades and everyday general lighting.
Clear Filament
Traditional-Looking LED
Clear filament GLS bulbs reveal the internal LED filaments and work particularly well in glass shades or fittings where the bulb remains visible.
Warm or Cool
Match the Room
Choose 2700K or 3000K for warm, comfortable light, or 4000K for a cleaner neutral-white appearance suited to kitchens and task-oriented spaces.
Dimming and Fitting Checks
Before Installing Your New GLS Bulb
Using a Dimmer Switch
If the light is controlled by a dimmer, select a Bell GLS bulb specifically described as dimmable. The existing dimmer must also be suitable for the low electrical load of LED lighting.
A non-dimmable LED should not be used on a dimmed circuit, as this may cause flickering, poor performance or premature failure.
Check the Available Space
Although GLS is a standard bulb shape, overall dimensions can vary between models—particularly higher-output and ultra-efficient lamps.
Check the height and width when fitting the bulb inside a small shade, enclosed fitting or lamp with limited clearance.
Explore Bell GLS Ranges
Everyday Value or Ultra-Efficient Performance?
The Bell GLS collection includes dependable everyday replacements alongside high-performance options designed to deliver more light from less energy.
GLS means General Lighting Service and describes the familiar full-size, pear-shaped bulb commonly used for everyday domestic lighting. It describes the shape rather than the cap or wattage.
What is the difference between B22 and E27 GLS bulbs?
A B22 bulb uses a bayonet cap with two side pins and is pushed and twisted into place. An E27 bulb has a threaded Edison screw cap. The two cap types are not interchangeable.
How do I choose the correct brightness?
Compare the lumen output rather than LED wattage alone. As a general guide, approximately 470 lumens replaces a traditional 40W bulb, while around 800 lumens is similar to a traditional 60W bulb.
Are all Bell GLS LED bulbs dimmable?
No. Bell offers both dimmable and non-dimmable GLS bulbs. Select a model specifically marked as dimmable and ensure the dimmer switch is compatible with LED lighting.
Should I choose a clear or opal GLS bulb?
Clear filament bulbs provide a traditional decorative appearance and suit fittings where the bulb is visible. Opal bulbs diffuse the light and are often preferred where a softer appearance and reduced glare are required.
Will a Bell GLS bulb fit inside my lampshade?
GLS bulbs use a familiar standard shape, but their exact dimensions can vary. Check the individual product dimensions when using a small shade, enclosed fitting or lamp with limited internal space.
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