Korben says on 16/Nov/06
he said 6'4 in a blue heelers episode, but looks bigger

Kath says on 16/Feb/06
I've met William on several occasions, and he's a very tall boy! I'm 5'6" and he's a good head taller than me. I have photos with him and usually he bends to bring his chin down closer to people's head levels. I've also noticed him fold himself up in flimsy chairs to get his long legs under a table. I would have said he's 6'5" myself. http://williamwatch.blogspot.com

Jason says on 11/Feb/06
He's probably 6'4 1/2''. He looked 6'5'' to me when I watched Blue Heelers back in the day.