Hi,
My parents built their own home on bought private land a few years back. They were incorrectly and naively believed that until the council officially adopted the site (and put Street lighting and collected refuse etc) they wouldn't be billed council tax. Sure enough they've never paid it in the last years. Until December when they receive a bill for £12000, payment to be made immediately. The letter says 'we haven't been charging you council tax' and then goes on to demand payment.
Despite living in an expensive house, they have no savings, it all went on the house and now face the prospect of taking a high interest loan (poor credit history).
Legally, can they do this?