If you really want the full dress boot option and are prepared to spend a lot, there's always RM Williams[2] of course. However, I've heard reports their quality has suffered in recent years. I have three pairs of Yearling Craftsman boots now between 15-25 years old. They've all been re-soled multiple times and the older ones are looking a bit worse for wear, but I've certainly had my money's worth out of them.
[0] http://baxterfootwear.com.au