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• Where possible, use a layering of light – this means lights placed at different heights in the room. In a sitting room you could try blending table lamps with wall lights and then possibly adding a ceiling pendant or recessed lights, all individually controlled or dimmed.

Avoid using too many recessed downlights in a room.  Downlights are fine, but not when used in excessive numbers as the light can be harsh and unflattering. In bathrooms, for example, place downlights around the edge of the room (over shower, basin and toilet) and avoid installing towards the middle of the room.

Ambient luminescence, focal glow and play of brilliants are the three basic types of lighting in perception-oriented lighting design as developed by the American lighting designer Richard Kelly.

This “grammar of light” not only forms an important basis for qualitative lighting design, but also for the development of luminaires.

• • Where possible, use a layering of light – this means lights placed

at different heights in the room.

• • Avoid using too many recessed downlights in a room.

• • Choose good quality LED light bulbs.

• • Look at the ambient light.