I'm considering visiting Cambridge, King's Lynn, and Leicester during the Christmas - New Year season, but unsure about how many interesting places will be open.
Why would I go? I'm hoping to get a ticket (via lottery) for the Nine Lessons & Carols service at King's College, Cambridge, on Christmas Eve afternoon, and then go on to King's Lynn so I can stand outside at Sandringham to see the Royal Family walk to and/or from church on Christmas morning. In Leicester there's a church retreat center where I hope to stay for a few days; I've submitted a request.
Apart from these goals, what else in the area would be fun at that time of year? Indoors, preferably. It seems that most museums and castles are closed. Advice will be most welcome!