I can't even start to imagine how to sculpt something like that. I had a hard time already with the Hamlet naked feet - whenever the top looked good the bottom looked awful, and when I had corrected that, the top was totally out of order again... I went through a few rounds of that. But it looks like they harden the face first before adding the hair? That would help I guess. Still, needs a lot of patience - and a steady hand.
Check their stuff out here: http://bigchiefstudios.co.uk/
Both the fourth and the original (brown suit) Tenth Doctor are sold out now, but a new Ten in blue suit is in the works and can be preordered.
Nice music in the video as well and very fitting. I'm glad I was able to watch it - last time they posted a video of how the figures get assemlbed in China German GEMA had blocked it because of the use of music.
Video link in case the embedding doesn't work: https://www.youtube.com/watch?v=5wY4Z0YbgV8