Any flights for commercial gain require certification of both the pilot (or UAV Controller) flying the actual drone, and the business which is conducting the operation. The pilot must have a UAV Controller’s Certificate (formerly called Remote Pilot Certificate) and the business must have a UAV Operator’s Certificate (or UOC).
From 25th September 2016 the term UAV will generally be replaced with RPA in official documents and the UAV Controller’s Certificate will be replaced by the Remote Pilot Licence.