There was a thread about a week ago discussing No7 foundation, it was highly rated by the people commenting. I've been trying out testers of a few of their foundations, and I will definitely be purchasing the Beautifully Matte foundation. The coverage is brilliant for me.
This isn't relevant to the thread, but the no7 assistant who colour matched my skin to a foundation shade, etc, treated me so well and spent quite some time talking about each type of foundation and how best to apply them. I'm a wheelchair user. She really put me at ease and made me feel special. Sorry to gush, it just made such a difference from the usual awkwardness I often experience from others in these sorts of situations.