Cheers gents! That trim restorer looks good indeed, I have a couple of light spots, might try that.

I'll drop the car off at the mechanic when he's back and let him have a look, will make a seperate thread if the issue isn't immedeately obvious.

So far I'll have these things to have him check:
- drive shaft bearing and guibo
- wheel bearings
- axles / transfer case

The tyres have been very quiet and I can't see any uneven wear, pressures are good. but I'll have him take a good look while checking the bearings