(2nd in an occasional series)

Does anyone remember the colsec trilogy by Douglas Hill?

http://www.fantasticfiction.co.uk/h/douglas-hill/exiles-of-colsec.htm

Who could forget the exciting adventures of anti-authoritarian prisoner Cord McKay, as he and his new friends have to survive a spacecrash on a hostile alien planet? COULD YOU?

Sad news: the author (Douglas Hill) died last year after being hit by a bus in Wood Green. RIP Douglas