This is another old RAF Phantom FG1 inspired livery. This time it's from 111 squadron that was based at Leuchars and dates from 1984. It's based on XV569 Q.
Mirage 2000C, Delta Wing, Dorito, you get the idea. To install unzip the folder and copy it to: Users -> [your name] -> Saved Games -> DCS[.Openbeta] -> Liveries ->M-2000C