If you are going to do a large project like a an exterior house painting project you will probably want to hire a Manchester painter.
A good way to get a dependable painting contractor is to ask people you know for names of contractors that they have used. You should try to get at least 3-4 names to choose from. Then you can get references of jobs done by the paint company from the contractors themselves.
Then you want to make sure that they have insurance and are bonded you may want to contact the company that insures them to make sure that their insurance is up to date.