Project Portfolio Manager Interview Questions UK: 8 Real Questions and What Interviewers Want

Most Project Portfolio Manager interviews in the UK follow a pattern, and knowing it beats guessing. Below are eight questions from our bank of 12, each with a note on what the interviewer is really after.

Eight Project Portfolio Manager interview questions, and what the interviewer is thinking

1. What does a project portfolio manager do, and how is it different from running a single project or programme?

Why they ask: They want to see you understand portfolio-level thinking.

2. How do you prioritise and select projects for a portfolio when demand exceeds funding and capacity?

Why they ask: They test the core portfolio skill.

3. Which portfolio management tools and techniques have you used, such as Planview, Microsoft Project Online or Power BI, and how do you choose between them?

Why they ask: They want to see practical tool experience.

4. How do you balance a portfolio between risk, return and strategic themes?

Why they ask: They test portfolio theory in practice.

5. How do you monitor portfolio health and decide when a project should be stopped?

Why they ask: They want to see decision-making discipline.

6. A very senior sponsor insists that their low-scoring project is added to the portfolio ahead of higher-scoring ones. How do you respond?

Why they ask: They test influence and integrity with powerful stakeholders.

7. Tell me about a time you introduced or improved a portfolio prioritisation process.

Why they ask: They want to see evidence of building portfolio capability.

8. Your capacity analysis shows several critical projects all need the same specialist team in the same quarter. What do you do?

Why they ask: They test resource conflict management.

A sample answer to question 1

What does a project portfolio manager do, and how is it different from running a single project or programme?

A project portfolio manager looks across all projects and programmes to make sure the organisation is investing in the right change and can deliver it. Rather than delivering one project's scope, I would be asking whether the mix of projects aligns with strategy, whether it is balanced across risk and return, and whether resources and budgets can support it. Day to day I would manage the intake and prioritisation process, maintain a consolidated view of cost, benefits, risk and capacity, run the portfolio board, and challenge project managers on status and value. A project manager is accountable for delivery, but I am accountable for the health and value of the whole set of investments, including recommending that projects are stopped or reshaped. The role requires strong commercial awareness, data skills and the confidence to influence senior leaders.

Common mistake to avoid: Describing as a super project manager; no mention of strategy

Want the rest?

Full model answers, key points and common mistakes for all 12 questions are on the Project Portfolio Manager interview questions page. The first five are free, no sign-up needed.