Knightsbridge Smart Bulb Review
Knightsbridge is a well-regarded brand in the UK electrical accessories market, known for robust wiring devices and lighting. This review examines their range of smart bulbs, focusing on build quality, connectivity, and value compared to industry leaders like Philips Hue and TP-Link.
Quick answer
Knightsbridge smart bulbs offer a solid, reliable entry into smart lighting, particularly for users who prioritize a local-only setup without mandatory cloud subscriptions. The best overall pick is the Knightsbridge Screwfix Smart RGBW B22 Bulb for its straightforward setup and consistent performance, though its app ecosystem is less feature-rich than Philips Hue.
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Research updated June 2026.
Knightsbridge Screwfix Smart RGBW B22
Reliable local-only control with no cloud dependency.
Pros
- Local control via app, no cloud subscription required
- Solid build quality typical of Knightsbridge
- Easy setup with the Screwfix Smart Life app
Cons
- Limited third-party integrations (no Apple HomeKit)
- App interface feels basic compared to Hue
Who is the Knightsbridge Smart Bulb for?
This bulb is best suited for UK homeowners who want a reliable smart bulb without the premium price tag of Philips Hue. It is ideal for users who prefer a local-only control system and do not need advanced features like adaptive lighting or complex automations. The B22 cap is standard in UK homes, making it a direct replacement for existing bulbs.
Performance and Brightness
The Knightsbridge Smart RGBW bulb outputs 806 lumens at 9W, which is equivalent to a 60W incandescent bulb. Owner reviews on Screwfix and Amazon consistently report that the brightness is sufficient for general room lighting, though it lacks the very high lumen output of some dedicated 100W-equivalent bulbs. The color range is decent, with 16 million colors and tunable white from warm 2700K to cool 6500K. Color accuracy is acceptable for ambient lighting, but not as precise as the Hue ecosystem for task lighting.
Build Quality and Durability
Knightsbridge has a strong reputation for manufacturing robust electrical products, and these bulbs feel well-constructed. The plastic housing is solid, and the bayonet cap is tight and secure. The LED lifespan is rated at 25,000 hours, which is standard for the category. The bulb runs cool during operation, which is a good sign for longevity. The 2-year warranty is competitive with other budget smart bulbs.
Connectivity and App Experience
The bulb connects via 2.4GHz Wi-Fi and uses the "Screwfix Smart Life" app, which is a white-label version of the Tuya Smart platform. Setup is straightforward: screw in the bulb, power on, and follow the app prompts. The app allows for basic scheduling, timers, and remote control. It also works with Amazon Alexa and Google Assistant for voice control. However, it does not support Apple HomeKit, Matter, or Zigbee, which limits integration with broader smart home ecosystems. Some users report occasional disconnections from Wi-Fi, which is a common issue with budget Wi-Fi bulbs.
Alternatives to Consider
If you want a richer ecosystem, the Philips Hue White and Color Ambiance bulb offers superior color accuracy, adaptive lighting, and extensive third-party integrations, but at a higher cost. For a similarly priced option with Matter support, the TP-Link Tapo L530E is a strong competitor. If you prefer a hub-based system for better reliability, the IKEA TRADFRI range is a good value alternative.
What to Check Before Buying
Ensure your home Wi-Fi router is on the 2.4GHz band, as the Knightsbridge bulb does not support 5GHz. Check that your light fixture is compatible with the bulb's physical size, as the RGBW model is slightly larger than a standard bulb. Also, confirm that the screw cap (E27) or bayonet cap (B22) matches your existing sockets.
Mistakes to Avoid
Do not assume the bulb will work with Apple HomeKit or Matter hubs, as it is strictly Wi-Fi only. Avoid using the bulb in enclosed fixtures, as heat buildup can reduce the lifespan. Do not expect the same color vibrancy as a dedicated RGB strip light.
FAQs
Does the Knightsbridge smart bulb work with Apple HomeKit?
No, the Knightsbridge smart bulb only works with Amazon Alexa and Google Assistant. It does not support Apple HomeKit.
Can I use the Knightsbridge bulb without an internet connection?
Yes, you can control the bulb via the local Wi-Fi network using the app, but remote control and voice commands require internet access.
What is the lifespan of a Knightsbridge smart bulb?
The LED lifespan is rated at 25,000 hours, which is about 22 years of typical use at 3 hours per day.
Does it require a hub?
No, the Knightsbridge smart bulb connects directly to your Wi-Fi router and does not require a separate hub.
Is the bulb dimmable?
Yes, the bulb is dimmable via the app or voice commands, but it does not work with a physical wall dimmer switch.
What cap types are available?
The Knightsbridge smart bulb is available in B22 (bayonet) and E27 (screw) caps.
Can I schedule the bulb to turn on and off?
Yes, the Screwfix Smart Life app supports scheduling and timer functions.
Does it support Matter protocol?
No, the Knightsbridge smart bulb does not support the Matter smart home standard.
How many colors does the RGBW bulb have?
It offers 16 million colors and tunable white from warm to cool.
Is the bulb energy efficient?
Yes, at 9W it uses 85% less energy than a standard 60W incandescent bulb.
Our verdict
The Knightsbridge Smart RGBW B22 bulb is the best overall pick for UK users wanting a reliable, local-only smart bulb without a subscription. For those on a tighter budget, the white-only version offers the same reliability at a lower cost, but the RGBW model provides better value for the money.