The others mentioned above and also Richard Coates from Equestrian re-hab http://www.equestrianrehab.com/transportation.html
He has 2 x 3.5t lorries & also some big ones for up to 10/12 for european distance & also polo jaunts. He's happy to send boxes out to pony club, pleasure rides & also to take large numbers out anywhere into UK & Europe
Also does overnight lairage for Gillies, so comes pretty well recco'd