Competency-based interviews (sometimes called behavioural or structured interviews) are the UK default for the public sector, the NHS, the civil service, banking, retail head-office and most graduate schemes. Instead of asking what you would hypothetically do, the interviewer asks for a real past example — "Tell me about a time you handled a difficult customer" — and scores your answer against a fixed competency framework. This guide gives you the twelve questions you are most likely to face in 2026, the STAR method that structures a winning answer, and the mistakes that quietly lose marks.
Why employers use competency questions
The logic is simple: past behaviour predicts future behaviour better than good intentions. By forcing every candidate to describe a real situation, the interviewer can score answers on the same scale and defend the hiring decision if challenged. That is why scoring is often literal — a panel marks each answer 1–5 against named competencies like "Working Together" or "Delivering at Pace" (the civil service Success Profiles use exactly this). You are not being judged on charisma; you are being judged on whether your example clearly demonstrates the behaviour.
This matters because it changes how you prepare. You are not memorising clever lines. You are building a small bank of real stories from your own experience that you can map onto whatever competency the question targets.
The STAR method (the only structure that scores)
Every strong competency answer follows STAR:
- Situation — one or two sentences of context. Where, when, what was at stake. Keep it short.
- Task — what specifically was your responsibility. Not the team's — yours.
- Action — the bulk of the answer. The concrete steps you took, in the first person. "I", not "we".
- Result — how it ended, ideally with a number or a clear outcome, plus what you learned.
The single most common failure is spending 80% of the answer on Situation and Task, then rushing Action and Result. The interviewer scores the Action. Spend your words there. A good ratio is roughly 10% / 10% / 60% / 20%.
12 competency questions you are likely to face in 2026
Map each to a STAR story before the interview. One strong story can often answer two or three of these with a different emphasis.
- Tell me about a time you worked in a team to achieve a goal. (Teamwork)
- Describe a situation where you had to deal with a difficult customer or colleague. (Conflict / communication)
- Give an example of when you had to meet a tight deadline. (Delivering at pace)
- Tell me about a time you made a mistake. What did you do? (Accountability)
- Describe when you had to adapt to a significant change. (Adaptability / resilience)
- Give an example of when you took the lead on something. (Leadership)
- Tell me about a time you solved a difficult problem. (Problem solving / analysis)
- Describe a situation where you had to persuade someone. (Influencing)
- Give an example of when you handled several priorities at once. (Organising / planning)
- Tell me about a time you went beyond what was expected. (Commitment / initiative)
- Describe when you received difficult feedback. How did you respond? (Self-awareness)
- Give an example of when you improved a process or way of working. (Continuous improvement)
A worked example
Question: "Tell me about a time you had to meet a tight deadline."
Situation: "During my final term as a teaching assistant, our department had to submit moderated coursework for 60 pupils four days early because of an exam-board change."
Task: "I was responsible for collating and cross-checking every script before the lead teacher signed them off."
Action: "I built a simple tracking sheet so we could see at a glance which scripts were outstanding, split the marking into two-hour blocks, and flagged the three pupils whose work was missing so the teacher could chase them directly. I stayed an extra hour on the second day to clear a backlog rather than let it pile up."
Result: "We submitted a full day early with zero errors flagged in the board's audit. The tracking sheet was reused the following year. I learned that visibility — knowing exactly what is outstanding — is what makes a tight deadline manageable."
Notice the Action carries the answer, every verb is "I", and the Result has a concrete outcome plus a lesson. That is a 4–5 score.
Mistakes that lose marks
- Hypotheticals. "I would usually..." scores nothing. They want a specific past event.
- "We" instead of "I". The panel scores your individual contribution. Hiding in the team is the most common way strong candidates underscore.
- No result. An answer with no outcome reads as unfinished. Always close the loop.
- Negative endings. Even a mistake question needs a constructive close — what you changed afterwards.
- One story for everything. Prepare at least six varied stories so you are not stretching one example past breaking point.
Prepare your stories the same way you would tailor a CV: read the job advert, note the competencies it names, and match a story to each. For more on quick, structured prep, see interview prep in 30 minutes, and if the role is in health or care, our NHS pay bands guide helps you frame salary expectations. Getting the CV that won you the interview right in the first place is covered in the ATS-friendly CV guide.
FAQ
- What is the difference between a competency and a normal interview?
- A competency interview asks for real past examples scored against a fixed framework. A normal interview is looser and often hypothetical. Competency formats reward specific STAR stories, not general statements about your character.
- How many examples should I prepare?
- Aim for six to eight varied stories covering teamwork, deadlines, conflict, leadership, problem solving and a mistake. With that bank you can answer almost any competency question by re-emphasising the same material.
- Can I use the same example twice in one interview?
- Once is fine if you emphasise a different competency, but try not to lean on a single story repeatedly — it signals a narrow range of experience. Spread your examples across roles and situations.
- What if I do not have a relevant example?
- Draw from any setting — volunteering, study, a part-time job, or a personal project. The competency is the point, not the prestige of the situation. A clear example from a Saturday job can outscore a vague one from a corporate role.
- How long should a STAR answer be?
- About two minutes. Long enough to cover all four parts with a substantive Action, short enough that the panel does not lose the thread. If you are past three minutes, you are over-explaining the Situation.
Atlas reads the job advert, surfaces the competencies it is testing for, and helps you line up a CV and examples that match before you walk in. Create a free account to prepare for your next interview with the advert in front of you.