"you'd have to undo years of common car ownership and town planning that assumes it - forget the out of town retail parks, cinema and leisure parks, everything would have to be redesigned to allow for local, town centre based shops"
The argument against out of town retail parks started as soon as they were being built. It never made sense to kill off town centers. Likewise the knocking down primary schools because the birth rate took a temporary slump.
"A large proportion will have an option other than driving, eg live local or have access to public transport including taxis. (V v v few areas with out a taxi)"
Taxis are now a nightmare, even here across Merseyside come 7.45-9am. We've had lots of taxi drivers leave, to never return. Most of the teachers live two buses away. For a large city, our buses are terrible.
"Less concerned about teachers than I am about paramedics and police officers"
They have emergency fuel supplies. If things got that bad the army would be brought in to supervise the emergency services getting fuel.
Everyone focuses on the Nurses/teachers, but it's the lower paid essential workers, the porters/cleaners/care assistants etc who can't afford taxis.
We need to realise that it was only originally BP who had shortages, so put the information out, caused panic, so then the government would have to grant emergency visas for workers. It means that industries don't have to reconsider their pay and conditions structures.