When one of staff talk a call with a woman asking "Where can I find a farmhouse/butler sink repairers and restorers?" we helped her as much as we could. The damage to her sink ended up not being too serious, she was complaining of grey marks to the ceramic of the sink. We advised her to try using some cleaning paste like Astonish - this is a lot cheaper in getting an expert in and is always worth a shot. Now that the sink is usable again, best crack on with some more washing! /p>