Inner tube changed on my £26
eBay bike - it came with a 650b inner tube, as it turns out, so not surprisingly there was a big tear around the valve. At least it was easy to find. Put in an old tube which has two patches, but holds air. Also swapped the tyre for a spare one that's slightly less off-road, given that I am riding it on road for the time being - the one that came off has loads of life and is a rather retro-tastic Farmer John's Cousin - it would be a waste to wear that out on road.
As for the bike that will be my road/commute/tow-path bike - it is now almost stripped. Today I finally managed to free the left hand crank after a good soak in penetrating oil. I still can't loosen the stem though, so it's upside down and full of vinegar in an attempt to soften the rust at the moment.