Out on a ride on the MTB earlier, and that 'cheep cheep' dry chain/jockey birdy was following me round. Jockeys are new and the chain oiled. Hmm must be the birds
Gave the bike a once over, and noticed it was coming from the non-drive side of the wheel. Wheel out, cassete off, axel out and tapped the non-drive side bearing out. Rather stiff. Limited 'cleaning materials' at the caravan, although most of my tool kit. Bearing cover off, and dripped oil into the bearings and left to soak. Whilst at it, cleaned up the freehub and re-lubed one of the outer bearings. Got non-drive side bearing and wiped it out, and regreased. Now, pressing back into the hub was tricky as I had no socket, and the bearing press won't fit over the axel. Tapped in with a freehub remover, then the final bit, carefully with a screwdriver on the outer edges.
Then checked rear pads - well worn. Front pads on way out so replaced the lot.
Good job I checked as I plan Llandegla this week.