The Locks-Changed directoryI'm always on the lookout for new locksmith directories for local locksmiths to submit their details.
Another good free one that has caught my attention is http://www.locks-changed.co.uk/directory.html
It's currently under construction but looks like another good source for local locksmiths to submit to for free.
It is run by the owner of http://www.doors-repaired.co.uk so should rank nicely in the search engines.
UPVC StoreA new supplier has popped up in the West Midlands, previously a web based business, now has a shop front for passing locksmiths to drop in.
Prices are very reasonable to trading locksmiths and these guys have a good list of contacts when it comes to sourcing older parts.
I've heard that they supply a lot of the main locksmith suppliers around the UK so you should be able to get best prices here!