As well as providing a range of different light sources in the bedroom, it’s also important to consider the nature of that light. It’s often said that blue screens are bad for sleep, and where possible it’s best to avoid using a phone or watching TV in the run-up to bedtime. The same principle also applies to the lighting in your bedroom – and it’s all to do with the strength and the ‘colour temperature’ of your lightbulbs.

The brightness of a lightbulb is measured in lumens, and you should opt for a lower output from your bedroom lighting, ie. fewer lumens. (Find out how much light you need in a room with our expert guide.)

It’s also important to consider the ‘colour temperature’ of your lightbulbs. Light is measured on the Kelvin scale (K), with cooler bluish and white light coming in at the higher end of the scale and warmer, yellower light towards the bottom. You should aim for this warmer, more relaxing light for wall lights, table lamps and floor lamps in the bedroom – somewhere in the region of 2.700-3.000K. For more information on colour temperature, see How to choose a lightbulb.