I've just got back from a few days in the lakes, and on the last day realised there is about 4mm of play in the rear wheel at the tyre.
After closer inspection it looked as though it was the whole rear triangle causing this play so i've stripped it down and removed all the bearings. A couple were seized and the rest are all pretty rough so i'm guessing i was right in what i thought was causing the wobble. The codes on the bearings are 6901 and 6001 and i need four of each- the question is, are cheap ones off ebay (about a quid each) significantly worse than an 'SKF' or similar branded bearing from an online retailer such as simplybearings (about a tenner each)?
Maybe i need to ask kaesae (sp?) for advice 😆