http://www.dogcages.net/
Dave makes great bespoke cages etc for all types of scenario not available from other sources and are rattle free, even puts hooks on them for your leads etc.
I am on my third bespoke cage from him for three different cars. Cheaper than Barjo, same quality, shorter lead time and he has every car design on his lap top or will measure up the latest model from a local garage if necessary.
I have friends who are on their 4th or 5th cage from him.
The advantage of his is they flat pack fold down and so you can get a big cage into a small aperture so maximising height and width.