I'm looking for the song played in Mad Dogs Series 2, episode 4. It has a Spanish style guitar riff with another distorted guitar.

The song starts just as the 3 guys (Baxter, Woody & Rick) go off walking to complete Mackenzie's task.

I've tried all search engines, Shazam, Soud Hound etc all to no avail, so if someone knows, please help!

Thanks