So I decided to do the noisey rear wheel bearing today and opted to remove the whole hub instead of doing it in situ everything came apart ok except for the handbrake cable which was a real pain to remove,
in the end I just put a thin screwdriver down the side of the barbed clip and spread it open. and the cable popped out immediately it was easy to reattach it to the cable once out, took the hub to my friends press and removed the old bearing (it was the original) after taking the bearing apart it was only marked in one spot a small chunk in the outer race, fitted new bearing resembled hub to car and took it for a test drive.
She's now SILENT no hum so it was worth the effort total cost was £26 for a FAG bearing and about 4/5 hours to do it

only downside was I notice the brake disk was badly scored on the inside so that'll be my next job