If you look on the web site they have a track listing for each episode.
http://www.bbc.co.uk/drama/lifeonmars/ Only eight episodes in this series but there is certainly going to be at least one more.
I also had a Mk3 Cortina. Mine was black. I think it cost £90 from the auctions. I used to drive to school in it!
Didn't life look a whole lot simpler in those days!!