| Variant | Quantity | Price | Variant Total |
|---|
GLS Light Bulb
A60 Amber Vintage LED Filament Bulb — E27, 4W, Edison Screw
From £1.55
£2.19
LED E27 A60 18W Cool White 6000K Non-Dimmable Bulb(Energy Saving)
From £1.08
5W E27 Cool White A60 Globe LED Light Bulb Energy Saving Lamp
£4.29
£4.89
LED E27 A60 18W Warm White 2700K Non-Dimmable Bulb(Energy Saving)
From £1.35
9W E27 A60 GLS LED Bulb – 806lm 6400K Cool White
From £1.10
12W E27 A60 GLS LED Bulb – 1160lm 6400K Cool White
From £0.71
5W B22 Bayonet LED GLS Bulb – 6400K Cool White, 430lm
From £3.35
LED GLS 9W B22 Light Bulbs Cool White Energy Saving
From £4.79
B22 LED Bulb A65 15W 1500LM Cool White 6400K Energy Saving
From £4.19
T75 B22 LED Bulb 12W 6400K Cool White Home Spotlight
From £1.95
Industrial GLS LED Bulbs 6-Pack – 6400K Cool White E27/B22
From £4.67
GLS Light Bulbs: How to Choose the Right LED, E27, E14, B22 and Filament Bulb
Choosing the correct light bulb for your home shouldn't be complicated. Whether you are replacing a standard ceiling pendant, upgrading to energy-saving LED lighting, or searching for decorative vintage Edison filaments, finding the right base fitting and brightness is essential. In this guide, you will learn the exact differences between E27, E14 and B22 bulb caps, understand lumen brightness ratings, and discover how to pick the perfect warm white or dimmable bulb for every room in your home.
What Is a GLS Light Bulb?
The acronym GLS stands for General Lighting Service. Historically recognized as the standard household light bulb with its signature pear silhouette (designated by the industry standard code A60, referring to its 60mm diameter profile), the GLS shape has been the lighting backbone of UK domestic ceiling roses and table lamps for well over a century.
While traditional incandescent GLS bulbs utilized fragile tungsten filaments that converted over 90% of electricity into wasted heat, modern iterations are powered by solid-state LED bulbs. These modern LED GLS equivalents preserve the classic form factor and 360-degree light distribution while slashing electricity consumption by up to 90% and remaining cool to the touch.
What Are the Different Types of Light Bulbs?
Understanding light bulb types involves matching both the bulb shape and the underlying lighting technology to your specific luminaire and aesthetic requirements:
Standard LED GLS Bulbs (A60) :
The classic pear profile featuring an opal (pearl) frosted diffuser. Delivers smooth, glare-free, omnidirectional ambient illumination suitable for general ceiling pendants, hallways, and shaded table lamps.
Vintage & Edison Filament Bulbs :
Showcases exposed glowing micro-LED filaments inside clear or amber-tinted glass (such as teardrop ST64 or squirrel cage patterns). Engineered specifically for exposed light fittings and decorative open fixtures.
Candle Bulbs (C35 / SES / SBC) :
Slimline, flame-shaped bulbs typically fitted with compact E14 (Small Edison Screw) or B15 caps. Essential for multi-arm crystal chandeliers, delicate wall sconces, and narrow bedside lamps.
Globe Bulbs (G95 & G125) :
Oversized spherical statement bulbs designed to be seen. Commonly suspended above kitchen islands, dining tables, or in modern geometric metal cages where the bulb itself is the visual centrepiece.
Dimmable LED GLS Bulbs :
Equipped with intelligent driver circuitry that modulates brightness smoothly across 10% to 100% when connected to compatible UK trailing-edge rotary or touch dimmer switches.
E27 vs E14 vs B22 — What Is the Difference?
The base cap determines mechanical and electrical compatibility with your lamp holder. In the UK, three main formats dominate domestic lighting:
| Bulb Base | Base Diameter | Fitting Mechanism | Typical UK Application | Main Advantage |
|---|---|---|---|---|
| E27 (Edison Screw) | 27 mm | Screw-in (Threaded) | Ceiling pendants, floor lamps, main ambient lighting | Universal global standard, robust connection, extensive bulb variety |
| E14 (Small Edison Screw - SES) | 14 mm | Screw-in (Threaded) | Bedside lamps, wall sconces, multi-arm chandeliers, desk lights | Compact profile suitable for petite decorative fittings and multi-bulb fixtures |
| B22 (Bayonet Cap - BC) | 22 mm | Push & 90° twist (2 locking pins) | UK standard domestic ceiling roses, table lamps, vintage fittings | Fast tool-free push-and-twist installation; the classic UK household favourite |
| B15 (Small Bayonet Cap - SBC) | 15 mm | Push & twist (2 pins) | Specialist table lamps, vintage wall lights, compact picture lamps | Low-profile bayonet mechanism for small decorative UK fittings |
| GU10 (Twist-Lock Spotlight) | 10 mm pin pitch | Push & quarter turn | Recessed kitchen/bathroom downlights, track spotlights | Directional focused beam angle (36°-120°), mains voltage |
How to Choose the Right GLS Light Bulb: 6-Step Decision Framework
- Check Your Fitting Base Identify if your lamp holder is screw (E27 standard or E14 small) or traditional UK bayonet (B22 push-and-twist).
- Select Bulb Technology Choose standard pearl LED for everyday diffused ceiling light, or vintage exposed filament for decorative fixtures.
- Choose Brightness in Lumens Aim for ~470 lm for bedside reading (40W equiv), ~806 lm for general ceiling rooms (60W equiv), or 1521 lm for high ceilings.
- Select Colour Temperature 2200K amber for vintage ambiance, 2700K warm white for lounges and bedrooms, or 4000K cool white for kitchen tasks.
- Verify Dimmer Compatibility Only choose dimmable LEDs if your wall switch is an LED-compatible trailing-edge dimmer to avoid buzzing and flicker.
- Confirm Physical Dimensions Standard GLS is 60mm wide and 105mm tall. Ensure it clears lampshades or glass globe enclosures.
Find the Right GLS Light Bulb for Your Fitting
Browse Electricalsone’s curated collection of UK-tested, energy-certified LED and filament light bulbs.
GLS Light Bulbs
Standard pear-shaped E27 and B22 LED bulbs for everyday domestic ceiling pendants and lamps.
Vintage Bulbs
Edison spiral filaments, amber glass teardrops and statement globes for exposed fixtures.
LED Bulbs
Complete energy-saving range including E14 candles, GU10 spotlights, and G9 capsules.
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