Martin Lewis has urged households to check if they could be owed a council tax refund as an estimated 400,000 may have overpaid due to properties being banded wrongly.

The Money Saving Expert founder hosted a council tax special on his ITV Money Show on Tuesday evening, where he announced the shocking statistic.

He explained the reason being that, in an attempt to set up council tax “quickly” in 1991 to replace the poll tax, the Government devised a “stop-gap valuation” to decide what…