When it comes to contractor searching one should always use reviews from what ever business directories you are using, this could give you good amount of information on the potential contractor. This will be very beneficial for a contractor to leave your review after you are happy with the job they have conducted for you.
I would make sure that you will do it after it is finished, sometimes through half of the work things can go wrong and you may dislike your contractor at the end and you do not want to pot negative review without reason to do so.
Once you are in virtual world your opinion can be found by many interested parties and you should be sensitive that you may destroy opinion of man that could make a simple mistake or something was simply out of his control.
South glamorgan and Mid Glamorgan is very numerous in contractors and many different trading organizations are out there to assist in finding right one for your needs. Like National Carpet Cleaner Association is fantastic to find very good contractor that will certainly be in certain price and standard level that will be satisfactory to many organizations and residential customers.
I think that above organization has best standards when it comes to their members and it requires professional training from all members and even staff of those companies.