Yes I successfully challenged the council tax banding of my house. The local authority had banded my house as a D band because it's surrounded by 4 bed detached properties even though, on the next road, the identical 3 bedroom house as mine were 3 bedroom semis in a C band. No previous owners had ever challenged it but, when my challenge was upheld, every previous owner of my house got a refund of their council tax going back to the 1990s! Bet I was popular at the Town Hall! 