In reply to Sion Daniels:
surley £2 from your local indoor wall shouldn't be tooooo expensive should it.
or is this a joke thread that I'm just not getting again?
There's so much chalk around there anyway you should be able to suck it off the holds and spit it back into a bag.
Or pick it up from the floor of the nice chimney descent route thing. Everyone forgets to do up their bag and subsequently it all tips out.
Good luck by the way... any idea where abouts you'll be going or which routes you fancy. Was there this weekend and boy was it warm. Remember to take some kind of anti-midge spray/uniform.
Good luck