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Five tips for choosing the right light bulb
Five expert tips from Which? on buying the best LED, CFL and halogen light bulbs. From light bulb fittings, brightness and colour, to if you should buy LEDs.
How we test energy saving light bulbs
Find out how Which? independently tests energy-saving light bulbs - including classic GLS bulbs and GU10 spotlights - to find the best for your home.
How to buy the best light bulb
We explain how to buy the best light bulbs. Find out whether CFL, LED or halogen bulbs are right for you as we go through the pros and cons of each.