I don't know if this interests anyone but my XR3 YNO was registered with these people for TV progs, shows etc. I haven't got any work from them yet but it is always nice if your car gets on TV. My other XR was on Top Gear GTI.
Anyway here is a link to register if anyone wants to, on their new web site:
http://www.starcarhire.co.uk/app/registercar.aspxI must do YNO again sometime.
Having said all that, I know someone who had a brown Mk3 Cortina that was on Life on Mars but they withdrew it because it wasn't getting treated very nice. I don't know who the agent was, and it probably wasn't these people (above) but just be aware that if your car is on a TV show you need to keep a watchful eye over it too.