As I've said I'm going from my own experience. I've used Pest Control, Garden maintenance, Roofers, Blinds and all have been excellent. I also submit the reviews directly onto the checkatrade website.The forms that you can fill out are posted directly to checkatrade. Not saying it's perfect but...
Try Checkatrade, every contractor I've used from there has been first rate. The reviews will tell their own story.
For example: http://www.checkatrade.com/TjbBuilders/