If you know your classic design, then you should have no problem identifying this as the work of Norman Cherner.
The Cherner Classic Walnut Side Chair has the same distinctive wasp-waisted shape as his armchair. It is made from moulded plywood and the example available here is covered with a rich walnut veneer. The chair costs £646 which is perhaps a bit expensive if you intend to buy a full set for your dining room, but undeniably stylish.
Visit the Conran Shop for more information.