I discovered this website a few months ago and have been using it on weekly basis ever since. Works really fast and does its job - I'm able to find contact info to nearly all UK directors in mere seconds.
First of all - I'm not a "reviewer" type of a guy, but after using the website for three months - I decided to at least leave them an honest review.
It's the easiest way you can lookup details about: directors and other people-in-charge in the UK.
5/5 stars - Benny
I live in Australia and often have to deal with clients from the UK, which is often problematic. But thanks to CheckDirector I can find most of business details and not spend too much time on it.
Although I have been using this website for only two months, CheckDirectors have already found a top place in my bookmarks. I can't imagine how I could have acted as a freelancer before :)