In 2016 the CAA undertook industry-first research into drone user behaviour and attitudes towards responsible drone use and the future of drones generally: view/download the report.
You can find a list of approved commercial drone operators at: www.caa.co.uk/cap1361
You can find details about the requirements to fly a drone commercially from the CAA at www.caa.co.uk/Commercial-industry/Aircraft/Unmanned-aircraft/Unmanned-Aircraft/
The European Aviation Safety Agency have a drone safety video here: www.youtube.com/watch?v=5Xs_eVx4nuw
NATS have created this video to remind drone users of the checks drone pilots should go through before taking to the skies, showing how they compare to those undertaken by General Aviation pilots:
A great video on the basic drone regulations has been made by the First Person View drone association: