Stamp Duty

My Solicitor wrongly calculated the amount of Stamp Duty on a Purchase but it was only brought to my attention 3 months after Completion. I was told by the Solicitor that I had to pay the shortfall, which I did, but I now have a letter advising of a penalty and Interest for late payment. On all my moves in the past the Solicitor dealt with HMRC not me so should they be paying the Penalty/Interest for late payment as they incorrectly calculated the Stamp Duty?

Hi,
Please contact the Stamp Duty Land Tax team for advice.
Stamp Duty Land Tax enquiries
Thank you.