No the salt for the roads is mined and processed in Nantwich. Its been the centre for salt prodiuction since Roman times.
Its extremely expensive to desalinate water and we wouldn't normally need to with average rainfall. This year has been exceptional in the East of England. It still not rained here properly since March.
I put this question to those in the know and they replied it would be too costly to ave desalination plants here.....so of course we still keep paying for services that are rubbish where they waste water and let consumers waste water even though there's never enough to go round with the ever increasing population of this island!
Hopkirk, I live in the North, we never find out whats going on in the Smoke, regards the Salt Maverick,I have haulage tons of the stuff from Nantwich & that is usually used for the roads, But last year white salt was used & If I remember it was up in Cumbria.