The Law Society of Scotland is interested in being made aware of email scams (and other similar issues) which are sent to members. Contact email@example.com
This maintains their awareness of the issues affecting members and enables LSS to issue timely alerts where necessary.
However the firms which receive these can also report these directly on the Action Fraud website;
Action Fraud is the UK's national fraud reporting centre run by the National Fraud Authority with support from partners such as the City of London Police. Email scams can be quickly reported by clicking on the Report Scams and Viruses button on the link provided and then sending the suspicious email to the City of London Police email address provided on the website.