Thanks for the advice chaps
I've already done the inside of the rear subframe and the rear upper arms with Dynax S50; and treated the outside of the subframe to a good wire-wheeling, before Hydrate 80 and then a good coat of Bilt Hamber epoxy mastic.
Got the front subframe to do now and once everything is fitted, the entire (exposed areas) underside will get treated with Dynax UB.
Loads of work still to do
Cheers,
Karl.