Absolutely agree with you, Laura.
He's resplendent at showing the character of heroes he's playing even without saying a word. We all remember the scene where Charles II was standing with his royal regalia in front of the parliament which he dissolved (New Worlds). His Crowned posture was convincing. And eyes.
They can express a lot of feelings. There are a few actors who have abilities to tell all in silence, and Jeremy is one of them.