And for Londoners, or those visiting London, there is Shervingtons - right outside Chancery Lane station. As well as stocking tobaccos of all sorts, pipes, cigars, snuff etc, they carry Merkur razors, and Shervingtons-badged Vulfix brushes, and creams, and Dovo straights.
The shop premises were illustrated on the original Old Holborn tobacco packaging. That image has now been replaced by that of an elephant.
<!-- m --><a class="postlink" href="http://www.smithsandshervs.co.uk/" onclick="window.open(this.href);return false;">http://www.smithsandshervs.co.uk/</a><!-- m -->
UPDATE:
Visited the store very recently and, sorry to say, it seems they are cutting right back on their shaving lines, focusing totally on their tobacco-related lines. Still had a couple of strops, brushes and creams left though.