RR classic - Front axle noise, any ideas?

Just an update.....I've eliminated the front prop. Had the vehicle jacked up turning the front wheels...definately sounding like its coming from within the axle toward the o/s driverside. The 'hammering' noise certainly sounds like the shaft within axle - half shaft (?) on that side.
To add clues to the mystery, looking closer at that area it looks like the hub has been off/replaced (I've not had this one long), tho it wasnt making this noise when I bought it.


P.S To top it off, the other end n/s swivel is leaking like a good 'un! ho hum

Thanks for yor suggestion norseman, yes after much head scratching I tried that one, definately still had drive to front wheels and no I couldn't turn the front prop (just before I took it off).
Thanks for the thought, it's atleast another thing ticked off/ eliminated, although I've not ruled out that the front diff hasn't gone all horribly wrong just yet.
I'm going to have to take a look closer at the hub off and delve into maybe replacing the CV on that side?

I'm wondering how far I can get into the axle on that side without dismantling the swivel housing / joint side of things ie not disturb the disc and caliper?.... probably delaying the inevitable I guess, but I just want to probe into what's making the noise and see what parts I might need without completely disabling the car if possible .
I have a mates Frontera front struts to replace soon, so need to shift this black RR out of the way if necessary.