Four more U.K. law firms have been impersonated in fake emails in the past week as the most recent wave of scam emails batters the mid-market.

Top 50 U.K. firms Shoosmiths, Mills & Reeve and RPC and Top 100 firm Howard Kennedy have all been impersonated in email scams since last Tuesday (September 10), according to notices filed on the Soliticors Regulation Authority’s (SRA) website.