It doesn't work for me either.
Have you tried searching for second hand Skylines on that website recently. I have and it came up with about 5, but none of the pictures would load up on it. This isn't anything to do with my computer its Middlehurst's fault. I e-mailed Chris-Batho about it and also asked which skylines they had in stock.
He sent me a list back (some very nice GTR's there), but there was no pictures again. He said that he didn't have any pictures of the cars.
What I presume is that somebody at Middlehurst has currently been changing the website, as I went on yesterday and it worked then.
Does it work for anybody else yet?