Hi there
Edward Davies
http://www.edwarddaviesdesign.com/ recently did some work in our garden and we're very pleased with it.
I found him to be really nice and reliable - reasonably priced and the work was all of a good quality.
I'd definitely use him again in the future. I know he does more of the 'hard landscape' side of things - rather than the gardening / replanting side of things - so he could be a good fit for your project
I hope that helps