Editor’s Note: Sign up for Unlocking the World, CNN Travel’s weekly newsletter. Get news about destinations opening, inspiration for future adventures, plus the latest in aviation, food and drink, where to stay and other travel developments. CNN  —  The UK: home to tradition, cozy cottages and Christmas movies. What better place to spend the holiday period than in a thatched cottage like in “The Holiday,” or have a romantic airport arrival channeling “Love Actually”? This year could be the perfect time for it, too – the normally mild UK has seen snow even in southern England. A white Christmas could be on the cards for the first time in years.…