Not as restrictive as some.
Sub-250 g doesn't require a pilot certificate and many restrictions for heavier aircraft don't apply. The legal requirement is that it be flown safely.
250 g to 25 kg require a sRPAS certificate to fly. There are two classes of certificate: basic and advanced. Basic flights are more limited, advanced certification gives you more freedom but requires a flight review as well as having a harder test. Both certificates require recency training every two years. Operations inside control zones require Special Flight Operations Certificates issued on a case-by-case basis in addition to an advanced sRPAS certificate.
Unlike America, the reason for the flight makes no difference whatsoever — all that matters is the aircraft and location. So I could open a business taking real estate photos or doing roof inspections with a Mini and no pilot certificate at all, totally legally, but I would require an advanced sRPAS certificate and a SFOC to fly my Mavic 2 in my back yard.
More details here:
