I have no connection with this firm, other than as a very satisfied customer. Following a couple of posts by Bogstandard here:
http://madmodder.net/index.php?topic=5491.msg58212#msg58212, and others, I happened to be in London village recently on an unconnected matter. I phoned the TapDie Co office and explained that I was in the area and would like to call in to purchase a few items.
It was pointed out to me that the office is not really a shop, but as I was passing by they would try to accommodate me. In fact, I had the most pleasant welcome, I purchased all my needs and left a very happy chap.

Worth a look if you need taps or dies:
www.tapdie.comNormally internet or phone orders only.
Once again, usual disclaimers....
Rgds,
John