Before you sign a contract with your chosen tradesman, ask if you could contact a customer that they have recently finished working for - they say that
Trade Professionals are only as good as their last job - this is not always true, but it is a good indication.
A good Trade Professional will always leave a satisfied customer, and should have no objection to you contacting one of them. They may need permission from their customer before you do this - so be patient, but remain insistent.
Their scores out of 10 based on Value for Money, Timeliness, Courtesy and Quality of Work can be seen next to their contact details.
Find out how much work they currently have ongoing - A major consideration for a Trade Professional is his cash flow; as a consequence they can tend to manage several jobs at once. This isn't a problem for a good Professional, but for one that is unorganised this can be their downfall!