First time poster. In short have flipped all my halogen GU10 bulbs over to LED. Only non spotlight is a Bayonet fitting in my bedroom. The halogen (45W candle) in that went this week & I am having trouble finding (am in UK) a reputable brand of halogen bulb to replace it (have uplighters so am OK in the short term).

Can I just use an LED to replace it instead (standard switch - not a dimmer) or would I need to other adjustments (e.g. to the power to step it down?). Am just thinking this may give me a better chance of finding a better bulb (& also cut the electricity bill!).

Thanks in advance for any suggestions.

  • Is the LED lamp rated for the mains voltage? If it is than it can be a direct replacement.
    – Ed Beal
    Commented Mar 5, 2018 at 5:13
  • Thanks. The supplier actually got in touch (I reached out on Twitter). In this case you couldn't. Don't know what adjustment was needed but they said no ☹
    – user8812
    Commented Mar 5, 2018 at 7:10

1 Answer 1


I've not dealt with these myself (but you made me curious): a simple search for B22d LEDs turns up plenty of results; e.g. these Osram's on Amazon. You haven't said what mount these "Bayonet fitting" is, but I assume it's the common one, i.e. B22d. You can find a full list of Bayonet fittings on Wikipedia, which also tells you how they're identified (usually by base measure).

  • Apologies. Thanks - yes it is a B22 - so I can just make a straight switch? Found loads of info on GU10s when switching over, just couldn't find anything on these - so I just assumed there would be an issue.. I also I try & buy certain things in store when I can (which may explain my issues - everywhere seems to be stocking cheap Chinese products 😕 - which when Googled have poor feedback).
    – user8812
    Commented Sep 11, 2017 at 19:32
  • @user8812: the Amazon link also has some Philips B22's which have even better reviews... Commented Sep 11, 2017 at 19:45
  • 1
    @user8812 - Anything sold with a B22 fitting is designed to go into a B22 fitting at mains voltage. If they sell it, you can use it. Simples.
    – AndyT
    Commented May 24, 2018 at 10:41

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