Start with permission, not presentation
A work sample is useful only when you are entitled to share it. Before adding anything to a portfolio, identify who owns the material, whether it contains personal or commercially sensitive information and what permission applies. Work created during employment, a placement or a client project may belong to the organisation even when you produced it. Ask a supervisor what can be retained, adapted or described. Written permission is stronger than an assumption. If permission is unclear, do not upload the original. Build a fresh demonstration that shows the same skill without reproducing protected content.
Choose evidence that proves a specific capability
A portfolio should not be a storage folder for everything you have completed. Select samples that answer a clear employer question: can this person analyse information, use the required tool, communicate a recommendation or improve a process? For each sample, write down the skill it demonstrates, the task context and the decision you made. A smaller collection of well-explained examples is more persuasive than dozens of unexplained files. Include different stages where useful, such as a brief, an early draft, feedback and the improved result, provided every item is permitted.
Remove information that does not belong to you
Redaction means more than covering a customer name. Check documents for names, email addresses, telephone numbers, account references, dates of birth, financial data, health information, passwords, internal links, comments, revision history and hidden metadata. Images can reveal faces, locations, screens or access details in the background. Spreadsheets may contain hidden sheets and formulas linked to private sources. Create a clean copy, inspect it as a recipient would and export it to a stable format. Never rely on a blurred screenshot when the underlying file remains downloadable.
Reconstruct the method when the output is private
You can often demonstrate judgement without showing the original deliverable. Create a fictional brief with invented data, repeat the process and explain that it is a reconstructed demonstration based on the type of task you performed. Keep the new example clearly separate from the organisation's branding and information. Describe the tools, checks and reasoning that transferred from the real task, while avoiding claims about confidential results. This approach is especially useful for accounting, legal, data, operations and customer-facing work where the most realistic source material cannot be shared.
Explain your individual contribution
A polished output can be misleading if the reader cannot tell what you did. Add a short case note covering the situation, your responsibility, the actions you completed, the people who reviewed the work and the result you are allowed to state. Distinguish your decisions from team decisions and supervisor decisions. If you used a template, say so. If a colleague supplied the data or design system, explain that boundary. Honest attribution does not weaken the sample. It shows that you understand collaboration and can describe your own contribution accurately.
Show feedback and improvement
Employers often learn more from revision than from a perfect final image. Where permitted, include a short explanation of the feedback you received and the change you made. Focus on the principle rather than reproducing private comments. For example, you might explain that a supervisor asked you to simplify a report, verify an assumption or make a calculation easier to audit. Then show how the revised demonstration addresses that point. This creates evidence of listening, quality control and professional development without exposing the reviewer or organisation.
Publish the minimum necessary
A public website is not the only portfolio format. Some evidence is better kept in a private PDF or discussed during an interview. Decide who genuinely needs access and for how long. Use view-only links where appropriate, remove old versions and review permissions periodically. Keep a private evidence register recording the source, permission, redactions, publication location and review date for each sample. If permission changes, remove the item promptly. A strong portfolio demonstrates skill and judgement at the same time. Protecting information is part of the evidence, not an obstacle to it.
Further reading: ICO guidance on data protection and employment. Accessed 9 August 2026.
Evidence principle
Use a claim only when you can explain it clearly, label its context accurately and support it without exposing confidential information.