Installing downlights within a room is a very effective way of improving the lighting levels within a room.
They can be used to pick out a feature or provide light to a dark corner of a room
There are many different types available including units that can be tilted.
There are a variety of colours available ranging from daylight to cool white to warm white. Daylight and Cool white is usually used in shop and office spaces with warm white used in seating areas and lounges etc. It is possible to install units that can have the colour changed via a switch on the unit if needed. There are also controllable units which can be interface with Smart Home devices such as Alexa and Google Home.
Most downlights can be dimmed to provide the idea level of illumination
A lumens test can be performed to ascertain the desired light levels if required.
Prior to any work on ceilings it is necessary in most circumstances to have the ceilings in question sampled for Asbestos. It is likely that most ceilings of any age will have had an Artex type covering applied which commonly contains Asbestos.