You would probably need to have been living on the moon or planet Mars not to know that last week was a very special one for Birmingham. Grand Central Birmingham had its official opening and is already proving to be a huge success, not least because of its amazing flaghip John Lewis store. I went along on Thursday to the opening and was just so impressed with how lovely it really is, and from the thousands of people who descended on the city last weekend, and the huge buzz you could feel everywhere, I guess I am not the only one. The John Lewis store is bright and vibrant, with…