Very wet and cold but we still needed a bit of help from visual effects to get the snow on the ground. BBC One Christmas ident for 2014 comes alive in front of our eyes. This was how it actually looked before any special effects. We created this circle of illuminated Christmas tree lights by placing trees running into the distance up a hill in a Hampshire forest. At dusk on that October evening, it suddenly felt very Christmassy. When we finally got power to all the lights and could turn them on, the cast, standing amidst the trees, even started singing Christmas carols!