A comprehensive GDPR checklist should cover the following key areas:

• Identify and document the lawful basis for each processing activity.
• Manage consent and ensure cookie compliance.
• Maintain clear and accurate privacy policies and notices.
• Establish procedures for handling data subject rights.
• Conduct Data Protection Impact Assessments (DPIAs) where required.
• Maintain a clear data breach detection and notification process.
• Have appropriate Data Processing Agreements (DPAs) with vendors.
• Provide regular GDPR training and awareness programmes for staff.
• Maintain Records of Processing Activities (RoPA).
• Implement safeguards for international data transfers.

Working through these items systematically can help organisations identify compliance gaps and prioritise remediation efforts.