What do you need to be legally compliant as an operator?

In Belgium, you’ll need to register online (free) and make sure your civil liability insurance covers your activities.

https://mobilit.belgium.be/nl/luchtvaart/drones/nieuwe_regelgeving/categorie_open/exploitant

 

For the UK, you’ll need to get an ‘operator ID’ online.

https://register-drones.caa.co.uk/drone-code/getting-what-you-need-to-fly