For Ladies (Ha) Only
A big draw for the fair (ha) sex with The Hollow Crown was, I think, all the lovely gentlemen to look at. There were lots of good-looking young actors and lots of good-looking mature actors.
Patrick Stewart leads by a parsec for me in the mature category, but he has an unfair advantage because he incarnates the word gentleman in real life. This is not to say the other mature actors don't rival him; I'm just unfamiliar with them. Hugh Bonneville is second. Adrian Dunbar is third and would have tied Bonneville if Plantagenet stayed as virtuous as Bonneville. (And Plantagenet's final scene was too horrific to watch with the volume turned up.)
Ben Miles falls in some group in-between, maybe with Cumberbatch. But Ben Miles definitely wins the in-between heartthrob award.
Kyle Soller in the young category has no competition.