Just noticed I have a nice oil pattern on rear wheel, coming out of the rubber cap which goes over the hub nut. Presumably a seal gone somewhere, any idea where please? What chances for my brake shoes also??
OK so if it ain't coming from the cap and it's on the outside, it sounds like you need a new paper gasket on your hub.
It'll cost under a quid, unless you want to make your own from a bit of paper ... If you do, remember to give it a good smear of oil before you put it on
If it was your oil seal it would tend to leak on the inside of the hub onto your tyre.