All UK commercial SPO operators will need to apply to the UK CAA for a High Risk Authorisation.
If the activity is taking place in another EU member state the operator should check whether that member state believes the activity to be high risk with the relevant Competent Authority. They should then make sure that the Competent Authority is aware that an application for a High Risk Authorisation is being made to the UK CAA. The UK CAA will assess the application in liaison with the relevant Competent Authority.
If the activity is taking place in a non-EU member state by a UK registered aircraft or by an operator based in the UK, an application for a High Risk Authorisation should still be made to the UK CAA. The operator will also have to ensure that they comply with any other relevant regulations applicable in the country where the activity is taking place.