Not sure if you managed to get your money back. But if you didn't, go research the contingent reimbursement model (CRM). Pretty much every major bank has signed up to it, and the CRM requires banks to reimburse victims, if the scam is sophisticated and the victim took reasonable steps to avoid the scam.

A basic house deposit payment redirection scam should be covered, assuming you have evidence that the emails were sent from your solicitors email address.