This paragraph is at the beginning of the report on this accident.
The sentiments are enshrined in legislation
"In exercise of his powers, the Chief Inspector of Air Accidents ordered an investigation to be carried out in accordance with the Civil Aviation (Investigation of Air Accidents and Incidents) Regulations 1996 and the European Regulations EU996/2010 on the investigation and prevention of accidents and incidents in civil aviation. The sole objective of the investigation under these Regulations is the prevention of accidents and incidents and not the apportioning of blame or liability."