Is Downing LLP regulated? Parag Patel Updated December 13, 2016 16:00 Follow Yes, Downing LLP is authorised and regulated by the FCA (Firm Reference Number: 545025). Related articles Who holds investors' cash? Who is eligible for an IFISA? What is identity verification? How does the platform work and how are investments made? How can I raise money for my business? Comments 0 comments Article is closed for comments.