I'm looking at adding Cruise control to my Freelander 56 Reg 2.0Td4 automatic, was it just a new steering wheel and the "motorway" switch or more to it
As above. Make sure the harness is there, I believe it should. If so, you'll need the CC main switch, a programmed CC ECU and the steering wheel controls. The CC ECU is best got from a scrappy and must be for the TD4. A new ECU would need programming, hence use an old one.