I worked on a film with Christian Bale that you might have heard of. It just came out a few weeks ago.
Wasn't anywhere close enough to see his height in comparison to my own though. I'm 6'2 but there was no way for me to measure it up when he was 15-20 feet away. That actually didn't cross my mind.
I know Hardy is a shorty though and that his stunt double was used for most of the shots the days I was there.