How to preserve evidence responsibly
Launch library · evergreen read

Preserving evidence responsibly means keeping only material you already have lawful access to as part of your normal duties, rather than deliberately seeking out documents you would not ordinarily be entitled to see. Overreaching in the name of building a stronger case can undermine both the disclosure itself and the person making it.
Useful evidence often includes dated notes made at the time, emails already sent to you, or documents you regularly handle as part of your role. Copies should be stored securely and separately from work systems where possible, since evidence kept only on a device the organisation controls can become inaccessible the moment a dispute arises.
Where there is any doubt about whether gathering particular material is appropriate, seeking advice before acting is far safer than assuming and potentially crossing a line that could weaken an otherwise credible disclosure. Responsible evidence preservation protects the substance of a genuine concern rather than distracting from it with a separate, avoidable problem.