which type? go around the back of any large furniture store, the lads there will usually help u out with any spares they may have. take some beer or ****! bribery works.
Woodfit sell some http://www.woodfit.com/ , I needed some heavy duty ones and had to get them from http://www.rockler.com in the US.
Yeah - had already found the rockler site, although it seemed a bit extreme to have to get them from the states and pay extra shipping costs! I'll try the other site but I like the bribery idea .... sounds cheaper....Cheers!!