The council tax system is unfair because there is a relatively low ceiling for even the most expensive properties.
Some extracts from This is Money November 2017:
"In some cases, billionaire oligarchs in West London pay less council tax than owners of modest family homes in Wiltshire.
"Picture a £136.4 million penthouse apartment in London’s Knightsbridge. The service fees alone are more than £3,000 a week and it’s no more than a five-minute walk to the famous Harrods department store.
"Now consider a three-bedroom semi in rural Wiltshire, on the market for £335,000.
"Its driveway can accommodate two cars and it boasts a modest garden. It may seem hard to believe, but the owner of the penthouse - Rinat Akhmetov, who happens to be Ukraine’s richest man - will pay £344 a year less in council tax (at £1,376) than a family moving to Wiltshire (who will pay £1,720).
"This absurd situation is playing out across the country, where wealthy homeowners are asked to contribute less than those in dire financial situations.
"Despite boasting some of the world’s most expensive homes, London boroughs including Westminster and Wandsworth impose some of the UK’s lowest council tax bills. No property in Westminster can be charged more than £1,376.28 a year."
Riverwalk I'm glad you mentioned about shared ownership. I think it is a very bad deal but many people have no option but to buy using this method.