Thanks for the help!
I've ordered a bearing kit so should have it in time for the weekend.
There wasn't a split pin throught the nut (in fact i'm not sure i remember a hole through the shaft for one....) so was a bit wary about how to make sure it's tight but not too slack that it would vibrate lose.
A friend had told me to fit the road wheel and spin it while tightening the hub nut, ever heard/used this method?