Oh dear, he really hasn't! What's happening with his eye? He always had a squint in EE but it was nothing like that. Looks like something out of an old black and white horror classic.
I was really looking forward to seeing him in Downton but now who knows.
Isn't he in character here? So has been aged to look a bit like Simon Callow? Also maybe his character on the show is married and therefore that is the reason for the wedding ring?