Johnstone’s Paints

I cannot recommend Johnston’s (Johnstone’s??) paints highly enough. I like rich colours. Used to whatever B&Q carries, I have always had to do a number of coats as one is never enough. Johnstone’s paints are a considerably higher quality (one, or two coats max), and you also get much more personal service. With all of this, comes spectacular prices.
Whenever we go in, we grab a 10L bucket of primer and a 10L of white finishing paint, with each for not much more than £20. The colours are a bit more than this (about £20-£25 for 5L), but we are always in buying so much that the seemingly gruff wee guy behind the counter has a bit of dialogue with himself about how much he can take off to help us out. You don’t get that kind of stuff at B&Q.
It’s branded as «trade supply» but they aren’t bothered if a regular Joe off the street walks in. The only down side is that their main opening hours are M-​F and only until 11 or 12 on Saturday.
Don’t be intimidated as I was the first time you go in, the staff really are all lovely but just used to dealing with professionals. It is absolutely THE best place to buy paint.