An easy way to get a good supply of worms is to let them come to you.
If you buy a composter from B&Q or Wilko like this:
Wilko Composter 220L at wilko.com
The very most important part is what you put in it... basically, any kitchen waste that is vegetable and UNCOOKED (the most important bit....).... so any peelings of potatoes or carrots, apple cores, banana skins, broccoli stems.... or anything in the fridge that vegetable that might be past its sell by - lettuce, tomatoes etc... all of it goes in here. You can also use put some garden waste in it as long as it's leafy (rather than woody) and isn't covered in soil.
Takes a little while to build up, but once it does the worms will come. And you'll have a fresh supply whenever you want them.
(I think you can also buy a stock of "compost worms" from some suppliers, sounds like cheating to me!
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