Aha! Here you are. Large zoozone for £55. You just need a small piece of mesh to mesh the top bars. An 11" wheel will fit. They might charge postage on top I guess
http://www.paulspets.co.uk/www.pauls...=6585004&ack=9
I think if he was in the smaller duna multy he might want out of cage time more often without going a bit stir crazy, whereas something like the zoozone he might be happy just staying in it for a week.