For anyone who's interested/finds this thread, I've done a bit of research and it seems like the Lower Arm Bushes are prone to drying out. This can normally be fixed with a healthy amount of Marine Grease.
There's also been a service bulletin issued across the pond for coil springs rubbing against the spring seat and making a squeaking noise:
http://www.scoobymods.com/showthread...26.html?t=5826
I'll get my grease gun out and let you know how I get on!