The General Visual Line of Sight Certificate (GVC) is the qualification required to apply for a CAA Operational Authorisation under UKPDRA-01.
UKPDRA-01 covers VLOS flights in the Specific Category, allowing UAS operations in congested areas with aircraft weighing up to 25 kg, provided certain conditions are met.
To get a GVC, you must complete approved theory training and a flight assessment through a Recognised Assessment Entity (RAE) such as Coptrz.