Whether it's a new piece or just new to you, art and antiques are a great way of adding interest and personal style to a room. And where better place to find these special treasures than at auction houses and art galleries? In the UK, we've spoiled for choice when it comes to fabulous places to find these pieces, so if you're looking for a new art gallery or antique dealership to explore, look no further; we've rounded up some of our favourites from House & Garden's online design directory, The List.