Tracking down some of these items...

J Barbour and Sons Ltd links:
Men's Wear
Wax Cotton Jackets


Here are Scotweb's Inverness and other Capes:
http://www.scotweb.co.uk/mens-wear/c...nd-capes/capes
And artificer provided a link to the "All Wool Deerstalker Hat" at Scotweb.

Here are the MISTER ANTONY Inverness Rain capes.

Jock Scot suggested an umbrella from Swaine Adeney & Brigg, so here are their umbrellas:
http://www.swaineadeney.co.uk/umbrel...ex.html?page=1

There are many sources on the web for wellies, so I won't post any links.

Hope that helps someone.