OK on the bike inversion - thanks .. that may help ! Re : the wheels, the rear wheel in particular can quite easily be refitted slightly out of alignment as I seemingly did. Should be easier to avoid with the bike inverted. Don't have any prior experience of working on bikes - this is my first for over 17 years and ashamed to say someone else always did whatever was needed the last time I owned one !
Don't think spare wheels are an option money-wise - I'm pretty sure the rear one on my bike would cost an arm and a leg looking at what's sat in the middle of it, and the front wheel dynamo lights complicate the idea for the front. Most likely can't afford that luxury at the moment.
I looked at those Continental ones but my main worry is over prolonged snow/ice. The law of sod would dictate I'd be stuck without alternative transport about the same time as that happened. Basically 3 one-way taxis if I can't ride because it's frozen and the tyres have paid for themselves (no such thing as buses or trains in the sticks and taxis are out of all proportion on the cost front
).
No experience of Winter riding in Europe but untreated rural lanes with black ice and refrozen evening tyre tracks in what had thawed to slush in the day sound like a death trap to me with something other than a studded tyre. Am I being overly concerned or missing the point ? Not bothered about an extra 5-10 minutes over 15-20 miles or a couple of mph off the speed if conditions are swinging from treacherous to slush.