One of the hardest things to establish when responding to numerous SARs, is consistency. If you have multiple staff members working on documents, it can be difficult to ensure you have a consistent approach to redaction. Personal interpretation of the law can lead to differing approaches to redactions, especially where contextual data is concerned. Employing a robust policy, and a clear outlined procedure allows you to provide some baseline standards, which will therefore communicate your expectancy, as a Data Controller, to your redaction staff. Consider including a table which details personal data which should always be redacted, or perhaps specific identifiers that are common within your organisation. Allowing redaction staff to contribute towards this will make a good working document that adds value to the process.