Financial expert Martin Lewis has criticised a key part of the modern tax system that has ballooned in recent years and can affect the poorest households the most, Council Tax.
Despite the tax being based on bad data, some of which was collected by two people driving around in second gear and guessing the value of each property, most homes are still taxed based on their value more than 30 years ago.
This is what Money Saving Expert founder Martin Lewis has called the "second gear valuations" of the Council Tax system, which was rapidly implemented in the 1990s after Thatcher's proposed Poll Tax collapsed.
It means that there are scores of homes up and down the UK that are valued incorrectly and being charged too much, or too little, tax.
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