just bought some for my van up to £20 cheaper thank anyothers i have found and def a good idea as we all know that standard van door locks to thieves are no deterent.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=270605103931&ssPageName=STRK:MEWNX:IT />

the locks arrived yesterday and took 10 mins to fit; they use any existing screw holes in the door frame so no drilling and very secure( will only open with keys) and neat i have included 2 pics of the locks fitted.
see phot gallery for the pics unless Al will place them in this posting for me.


EDIT--
Photo 1

Photo 2