Huntercombe in Oxfordshire, England. I had not heard of this course until I got to London, and it has changed the way I look at golf courses now.
In general, the biggest surprise of the year was how much golf I got to play during my stay across the pond. I've been reading Ran's reviews of courses like Swinley Forest, Deal and Addington for years. I always thought, "that course looks unreal, but I will never get to play it." One month in, I enjoyed a great day at Swinley Forest with some of GCA's finest. After that, I was hooked on London golf.