This was sent round on social media,  If you have friends who may not see this, please warn them as it seems very plausible.
CouncilTaxScam 

A realistic-looking scam email about council tax refunds has been circulating in the area.

North East Lincolnshire Council has warned people across the county about a scam email which promises a council tax refund from overpayment.

The email looks genuine, but can compromise your personal information if you click the links within it and follow the instructions given.