I have not got any Cosplay pictures yet but I do know some links to some people who have been to some of the conventions.
www.geocities.com/rocketwarehouse Minamicon 8 and Aya Con 2002
www.wkwong.plus.com/Photos/Cosplay_Conventions.htm Pics from Minamicon 7, 8, Aya Con Returns 2002 and AnimeCon UK.
www.poik.net/kentanimeted/minamicon8/ Pics from Minamicon 8.
nerv.org.uk/anime_cons.html Pics from minamicon 8, 7 and 6
www.anime.me.uk/ It has a wide selection