Hugh Laurie is going bald fast. The British actor is losing his hair from the vertex so it not easy to spot at first sight. Hugh Laurie’s baldness is typical of male pattern baldness, his temples have receded but the vertex (crown of the head) is the most affected, this hair loss pattern is known as type III vertex.
To be fair Hugh Laurie is 54 so he can count himself lucky that he kept his hair until his early 50s!
These are some pictures of Hugh Laurie baldness:

this is how Hugh Laurie’s hair used to look

fwiw Rogaine does an excellent job for vertex hair regrowth or at least slowing down the hair loss.