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? How does the platform work and how are investments made? Who provides the electronic platform? What is identity verification? Why is the minimum investment as low as £100 and what is the maximum? Comments 0 comments Article is closed for comments.