Duffin Marine supply very competitive wooden Mirrors of the highest quality and are widely regarded as the best wooden boats available. The slideshow below is of Mirror dinghy 70606, "All The Right Reasons", which features some hardwood parts made from walnut (a special order). The boat was finished by Nigel Potter of Paintcraft Boats and fitted out by Steve Wilkinson.
Duffin Marine also supply Mirror Kits. A "hull only" kit comprising all the wooden parts (plywood is Robbins Elite), glass tape, ISAF plaque, fasteners if required, but no resin sells for £995 including VAT (2013 price).
If you are interested in a kit or a boat, Alistair Duffin's contact details and further information is here.