Got back from my ride yesterday with some roughness in the transmission and a rear mudguard that rubbed when I was up on the pedals, taking the pedals off revealed rough bearings so they were stood in a corner and left to soak in oil, taking the wheels off I cleared a couple off pounds of dirt and rubbish from under the mudguards, whilst doing that I discovered the rear was broken, two of the rivets had pulled through, a quick rummage in the bits box produced the necessary nuts, bolts and washers to fix it, refitted the wheels and made some adjustments, will see how it is next time I ride. Looking at the pedals this morning the left was OK but the right was still rough, I dismantled, cleaned and greased it and its back to normal smoothness, one of the bearings had broken up.