Head of Data Interview Questions UK: 8 Real Questions and What Interviewers Want

Applying for a Head of Data job in the UK? Here is what you are likely to be asked. These questions come from our Head of Data question bank of 16 questions, written for UK employers at head/director level.

Eight Head of Data interview questions, and what the interviewer is thinking

1. What would you want to achieve in your first 90 days as our Head of Data?

Why they ask: They want to see whether you can diagnose before prescribing and prioritise value over activity.

2. How would you build a data strategy that the board actually backs?

Why they ask: They are testing whether you can link data investment to business value rather than technology fashion.

3. How do you structure data governance so that it works in practice rather than just existing on paper?

Why they ask: They want evidence you can make governance a lived operating model with accountable owners.

4. How would you decide between building a data platform in-house and buying a managed solution?

Why they ask: They are checking commercial judgement, total cost awareness and realism about team capability.

5. How do you structure a data function: centralised, federated or hub and spoke?

Why they ask: They want to see organisational design thinking and awareness of the trade-offs.

6. What does the Data (Use and Access) Act 2025 mean for how you lead data work, alongside UK GDPR?

Why they ask: They are testing regulatory awareness at leadership level and your ability to translate it into practice.

7. The finance director and the sales director each present different revenue figures at an executive meeting, and both blame your team's data. What do you do?

Why they ask: They are testing how you restore trust in data under senior pressure.

8. Tell me about a time you built or transformed a data capability, and how you secured buy-in for it.

Why they ask: They want proof that you have led change and influenced senior stakeholders, not just run a team.

A sample answer to question 1

What would you want to achieve in your first 90 days as our Head of Data?

I would spend the first month listening: meeting the executive team, the heads of function and the data team itself to understand what decisions the business struggles to make and where trust in numbers is weakest. I would map the current estate, covering platforms, pipelines, key reports, skills and spend, and review our governance position, including how we handle UK GDPR and the Data (Use and Access) Act. By day sixty I would present a short, honest assessment with two or three priorities, usually a mix of one quick win that visibly helps a senior stakeholder and one foundational fix, such as agreeing a single definition for our core metrics. By day ninety I would have an agreed twelve-month roadmap tied to commercial outcomes, a clear ownership model for data, and early momentum in the team. I would avoid announcing a grand transformation before I understood what was already working.

Common mistake to avoid: Arriving with a pre-set technology plan; promising big transformation without evidence

Want the rest?

Full model answers, key points and common mistakes for all 16 questions are on the Head of Data interview questions page. The first five are free, no sign-up needed.