Campagnolo wheels & cassette - spacers?

Jon_1976 Posts: 690
edited April 2013 in Road buying advice
Ribble had a little Campag sale on yesterday so I ordered a few bits. Having never built up a Campag bike before, I need some advice.
I ordered some Khamsin wheels (with 9/10/11s hub) and a Centaur cassette. Do I need to buy any spacers or are they provided

When I built my last bike (Shimano) with Fulcrum Racing 5's, the necessary spacer was supplied with the wheels and the tiagra cassette didn't need one. Just curious if Campag expect you to sort your own out.