Well, never one to be beaten, I have trawled the internet trying to find these little monkeys.
I have found out that they are supplied by a company called Wildberry Pet Products Ltd, and are now known as Rex Cages.
I have just called them, and they have confirmed that the cages have been discontinued
I asked if they were being replaced with a similar cage, and she said that she would email me a photo of the next best thing. As soon as I get it, I will post it here.
I have found a few places that supposedly stock the 'Rex' Cage, and am waiting to hear back. As I type, I have just received an email from one place, saying that they are expecting stock of the Green based ones next Wednesday. They are £40.95 plus P&P though.
As soon as I hear anymore, i'll let you know!!!