Choosing the right light bulb can be confusing. With names like E27, GU10, G9, A60 and ST64, it's easy to wonder which bulb fits your light fitting and what all these codes actually mean.
Whether you're replacing an old globe or choosing bulbs for a brand-new light fitting, understanding the different bulb shapes, sizes and lamp holder types will help you get the best performance, appearance and energy efficiency.
This guide explains everything you need to know about modern LED light bulbs, including common fittings, bulb shapes and colour temperatures.