Its a yes and a no. 

If we are installing downlight fixtures for you then yes. We will generally fit an integrated downlight fixture which comes with a bulb already fitted and we offer a 5 year guarantee on them. 

If we are installing a light fixture then it will depend. Different bulbs (or lamps is you're a purist) will perform differently, so it is more personal preference than simply buying any lamp and putting it in. 

With there being so many light bulbs on the market, we will generally have a research chat to find out what type of light you would like, how bright you would like it, and how you would like to control them. From here we will make some recommendations and make sure that we only suggest lamps that we completely trust and have a good reputation.