The guidance on this page is suitable for large businesses in the public, private and third sectors. Small businesses should use the resources on our small business web hub.
The definitions of 'controllers' and 'processors', how to determine if you are a controller or processor and what the roles are.
More detailed guidance on controllers and processors, including how to apply the roles in practice, your responsibilities under each role and joint controllers.
Assess your high level compliance with data protection legislation, as a data controller.
Assess your high level compliance with data protection legislation, as a data processor.