Episode 58 - Colony in Space

"Freedom! At least I am free to explore the cosmos again with my faithful companion....wait, what do you mean the directions are preset???"

This week Paddy and Tricia discuss the Doctor's first trip to another planet in a very long time. But why has he been sent to one specific planet that is currently be contested over by a group of settlers and a heartless mining company? What is so important about the Colony in Space?