This scammer blatantly asks you for all your credit card details. Attached to this scam refund notice was a form to fill in and return – this is the information it asks for:
We have reviwed your tax return and our calculations of your last years accounts a
tax refund of 344.79 ? is due
Please submit the tax refund request and allow us 5-9 days in order to process it.
A refund can be delayed for a variety of reasons.
For example submitting invalid records or applying after the deadline.
Please submit the form attached to your email in order to complete your tax refund
United Kingdom Tax Office