Proper leather shoes

Hi! This is probably the wrong thread for it, but i would really like a pair of blundstone 500s, is there anywhere in london where i can get/try on. My feet are 5.5/6 but there are quite narrow so size 6 can be too big most of the time.
http://www.allthingsaustralian.com.au/
I'm in Canada and ordered from these guys, got some Redbacks (still made in Oz as opposed to Blundstone) for $120 including shipping. This is 2/3 the price I would pay locally, and only Blundstone are available locally.