Competition & Markets Authority Interview: Process, Questions & Tips

What to Expect from the CMA Interview Process

The Competition & Markets Authority is a UK government department and non-ministerial department, which means its recruitment broadly follows Civil Service norms whilst also reflecting the CMA's specialist, economics-heavy culture. Depending on the role — economist, case officer, lawyer, digital markets specialist — the number of stages and their format will vary, but candidates typically encounter at least two assessment points before an offer.

Entry-level and analyst-grade roles often begin with an online application and, in many cases, a sift of your CV and personal statement against the advertised Civil Service Success Profiles. More senior or specialist positions may add a written exercise, a technical test, or a presentation task before the final panel interview. Always read the vacancy carefully: the job advert and candidate pack are your single most reliable source of process detail.

• Application and CV/personal statement sift against Success Profiles
• Online reasoning or technical assessment (role-dependent)
• Written exercise or case study (common for economist and legal roles)
• Competency/behaviour panel interview (usually one or two interviewers)
• Presentation or in-tray exercise for senior grades

The Civil Service Success Profiles Framework

Because the CMA recruits through the Civil Service, it uses the Success Profiles framework to assess candidates. This framework has five elements: Behaviours, Strengths, Ability, Experience, and Technical skills. The job advert will tell you which elements apply to your role and grade — note them carefully and prepare evidence for each.

The Behaviours most frequently cited in analytical and policy roles include Making Effective Decisions, Communicating and Influencing, Working Together, Delivering at Pace, and Seeing the Big Picture. For economist or case-work roles, you should also expect probing around your technical ability: economic reasoning, evidence analysis, and the capacity to translate complex findings into clear recommendations for non-specialist audiences.

• Check the advert: it will list the exact Behaviours being assessed
• Prepare one strong STAR example per listed Behaviour
• For technical roles, be ready to discuss methodology and how you communicated findings
• Strengths-based questions may be mixed in — these are harder to rehearse, so reflect on what genuinely energises you at work

Common CMA Interview Question Themes

While the CMA does not publicly disclose its exact question bank, the organisation's work — merger control, market investigations, consumer protection enforcement — shapes the competencies it probes. Interviewers want to see rigorous thinking, intellectual curiosity, and a clear commitment to the public interest. Below are the themes that regularly surface in competition-authority interviews at this level.

Analytical rigour: Expect questions that test how you handle ambiguous data, weigh conflicting evidence, or reach a defensible conclusion under uncertainty. Integrity and objectivity: The CMA operates quasi-judicially; you may be asked how you have maintained impartiality when stakeholders pushed back on your analysis. Stakeholder communication: Case work involves engaging with large corporations, legal teams, and members of the public — questions about persuading or explaining to non-technical audiences are common. Motivation and values: Why competition policy? Why public service? Interviewers want authentic answers, not buzzwords.

• "Tell me about a time you had to make a decision with incomplete information."
• "Describe a situation where you challenged an assumption in an analysis you or a colleague had made."
• "Give an example of explaining a complex technical or economic concept to a non-specialist audience."
• "Tell me about a time you had to balance competing priorities under a tight deadline."
• "Why do you want to work at the CMA specifically?"

How to Use STAR to Structure Your Answers

The STAR method — Situation, Task, Action, Result — is the standard structure for Civil Service competency answers and works well in CMA interviews. Keep the Situation brief (two or three sentences), make the Task your specific responsibility clear, devote most of your time to the Action (what YOU did, not the team), and close with a quantified or clearly described Result.

Here is a concrete example for the Behaviour 'Making Effective Decisions': Situation — 'I was working as an analyst on a market-entry project where we had two weeks of sales data rather than the six months we had planned for.' Task — 'I needed to produce a pricing recommendation for the leadership team before a board presentation.' Action — 'I triangulated the limited internal data with three publicly available competitor datasets, applied a sensitivity analysis to flag the range of uncertainty, and drafted a recommendation with clearly stated caveats and a risk register.' Result — 'The board approved a phased entry strategy based on my recommendation; the caveats I had flagged were later validated when the fuller dataset arrived, and no material adjustments were needed.' Notice the specificity: a timeline, a named technique, and a concrete outcome.

Technical and Written Exercise Preparation

For economist and analytical roles in particular, a written exercise or case study is a realistic part of the process. You may be given a short briefing paper and asked to produce an annotated response, a pros-and-cons assessment, or a recommendation to a fictional decision-maker. The CMA values clear structure, economic logic, proportionate conclusions, and plain English — even in technical outputs.

To prepare: practise summarising the key issue in one paragraph, structuring your analysis around two or three central questions rather than listing every possible consideration, and always ending with a clearly signposted conclusion. Read the CMA's published market study reports and merger decisions — they are freely available on gov.uk — to absorb the house style of evidence-based, plainly written competition analysis.

• Read at least two recent CMA case decisions or market investigation reports before your interview
• Practise writing a one-page summary of a complex economic argument
• Time yourself — written exercises often have strict limits
• Use signposting language: 'The central question is…', 'On balance…', 'The key risk is…'

Demonstrating Motivation and Public-Interest Values

One area where candidates often underperform is the motivation question. 'Why the CMA?' deserves a specific, informed answer — not a generic statement about wanting to make a difference. Reference a real piece of CMA work that interested you: a recent market study, a significant merger decision, or the Digital Markets Unit's emerging role under the Digital Markets, Competition and Consumers Act. Show you understand that the CMA's power lies in its independence and its evidence-based approach.

Public-sector interviewers are also alert to whether candidates understand the constraints of their role — you are not a consultant free to recommend anything commercially appealing; you are a public servant accountable to evidence and due process. Framing your past experience in terms of objectivity, thoroughness, and public benefit will resonate far more than commercial impact metrics alone.

Practical Preparation Checklist

Use the two weeks before your interview systematically. Good preparation is the difference between an answer that feels rehearsed and one that feels both fluent and genuine — the latter comes from having internalised your examples, not memorised them word-for-word.

Practising on camera is one of the most underused preparation techniques. If you record yourself answering a CMA-style question under time pressure, you will immediately notice habits — filler words, eye contact, pacing — that are invisible when you rehearse in your head. ScreenReady is built for exactly this: it simulates timed, one-way video answers and gives you AI feedback on structure and clarity, which mirrors the pressure of a real panel or video-screening round.

• Re-read the job advert and note every listed Behaviour and technical requirement
• Write out one STAR example per Behaviour — aim for examples from the last three years
• Read the CMA's Annual Plan and at least one recent case decision
• Prepare two or three informed questions to ask the panel
• Record yourself answering questions on camera and review for clarity and structure
• Time your answers: aim for two to three minutes per competency question
• Confirm logistics: location or video platform, ID requirements, who to contact if there are technical issues