NHS INTERVIEW GUIDE

Scientist Training Programme (STP) Interview: Format, Questions and Preparation

A plain guide to the STP selection process, example questions for each interview area, a worked values answer, common mistakes and a preparation plan.

Last updated 24 October 2026 · Created by a practising NHS doctor · Independent of the NHS

Quick answer

What is the Scientist Training Programme (STP) interview and how do I prepare?

The STP interview is the final selection stage for NHS trainee clinical scientist posts, reached after an online application and a situational judgement test. It usually covers general science, specialist science, and leadership, values and behaviours. Prepare by studying the person specification, revising your specialism, building STAR examples, and practising concise answers. Formats change, so check the current NSHCS applicant guidance.

Key takeaways

Selection usually runs application, SJT, shortlisting, interview, then allocation.
Questions cover general science, specialist science and values and leadership.
Earlier cycles used MMI stations; recent ones describe an online panel.
Use STAR for values questions and keep answers to a few minutes.
Always check the current NSHCS guidance for your cycle.

The Scientist Training Programme (STP) interview is the final selection stage for the three year NHS training route to becoming a clinical scientist. In recent cycles it has been a structured interview that tests your general science, your understanding of your chosen specialism, and your leadership, values and behaviours, and you only reach it after an online application and a situational judgement test. To prepare, learn the person specification, revise the science behind your specialism, and practise short, structured answers with real examples.

The format has changed over the years, from in-person multiple mini interview (MMI) stations to online panel interviews, and details such as timings, platforms and scoring can change from one recruitment cycle to the next. This guide describes the process in general terms, so always check the current applicant guidance from the National School of Healthcare Science (NSHCS) for England, or from the relevant body in Wales, Scotland or Northern Ireland. The example questions below are original practice material, not real or leaked questions.

In this guide

What is the STP interview?
How does the STP recruitment process work?
Is the STP interview a multiple mini interview (MMI)?
What do STP interview panels look for?
What questions are asked in the STP interview?
How do I answer STP values and leadership questions?
What are common STP interview mistakes?
How should I prepare for the STP interview?

What is the STP interview?

The STP interview is a short, structured assessment that decides who is offered a trainee clinical scientist post. Panels usually include at least one working scientist from the specialism, and questions come from an approved bank linked to the person specification, so every candidate in a specialty is assessed on similar ground.

Because so many people apply for relatively few posts, the interview is where most of the competition happens. Strong grades get you through the door, but the panel is looking for someone who can think like a scientist, explain clearly, and behave in line with NHS values when things get difficult.

How does the STP recruitment process work?

Direct entry recruitment in England typically opens early in the year for an autumn start and runs in several stages. Check the current deadlines and guidance, because dates, specialties and post numbers change each cycle.

Online application: you show how you meet the person specification, with your qualifications, experience and motivation for your chosen specialisms.
Situational judgement test (SJT): a timed online test of work-based scenarios where you rate how appropriate different responses are. It looks at qualities such as empathy and compassion, professional integrity, teamwork and adaptability. You need to pass a threshold to be longlisted.
Shortlisting and ranking: scientists review longlisted applications, and scores plus location preferences decide who is invited to interview and who goes on a reserve list.
Interview: recent guidance describes an online panel interview of up to about 50 minutes, with questions in three areas: general science, specialist science, and leadership, values and behaviours.
Allocation: successful candidates are matched to employers based on scores and preferences, then the employer issues a contract and the university contacts you about the MSc.

Is the STP interview a multiple mini interview (MMI)?

It used to be, and it still feels like one. Earlier cycles used in-person multiple mini interviews, with short timed stations covering general scientific aptitude, specialism knowledge and values and leadership, and communication scored throughout.

More recent guidance describes a single online panel, but the questions are still grouped into the same kinds of areas, so preparing as if for stations is sensible. Expect each answer to have a soft time limit of a few minutes, and expect the panel to move you on if you run long. Check your invitation for the exact format.

What do STP interview panels look for?

Panels score you against the person specification. Across the different areas, they commonly look for:

Scientific reasoning: can you think through a problem logically, not just recall facts?
Specialism understanding: do you know what scientists in this area actually do, and how their work affects patients?
Communication: can you explain science clearly to a non-specialist, such as a patient or a clinician from another field?
Values and behaviours: honesty, respect, compassion and putting patient safety first.
Leadership potential: taking responsibility, working in teams, handling change and learning from mistakes.
Insight and motivation: a realistic view of the three year programme and why this route suits you.

What questions are asked in the STP interview?

Here are 14 practice questions grouped by interview area. They are original examples of the kinds of themes that come up, not real questions.

General science: Tell us about a recent scientific development that interested you and why it matters to the NHS.
General science: How would you explain the importance of quality control in a laboratory or clinical service to a member of the public?
General science: How would you judge whether a published study should change practice?
General science: What role do healthcare scientists play in the patient pathway?
General science: Talk us through a time your experimental results did not match what you expected.
Specialist science: Why have you chosen this specialism, and what does a clinical scientist in it do day to day?
Specialist science: Describe a test or technique used in this specialism and how its results affect patient care.
Specialist science: What challenges or developments do you think this specialism will face in the next few years?
Specialist science: How would you explain a result from this specialism to a worried patient?
Values and behaviours: Tell us about a time you noticed something was not right. What did you do?
Values and behaviours: A colleague asks you to sign off work you did not check. How would you respond?
Leadership: Describe a time you led a group or project. What went well and what would you change?
Leadership: How do you handle competing deadlines, for example between training, work and an MSc?
Motivation: How have you found out what the programme involves, and how will you cope with its demands?

How do I answer STP values and leadership questions?

Use the STAR method: describe the Situation and Task briefly, spend most of your time on the Action you personally took, and finish with the Result and what you learned. Link your example to a value such as honesty or patient safety, and keep it to a few minutes.

Your examples do not have to come from healthcare. A lab project, a part-time job, volunteering or a society role can all show integrity and teamwork if you explain your reasoning.

Worked example: "Tell us about a time you had to speak up about a mistake."

Situation: During my final year research project, I was sharing a set of samples with another student. While writing up, I realised a batch of my measurements had been run with a reagent that was past its expiry date.

Task: The data supported my hypothesis and the deadline was close, so it would have been easy to say nothing. But I knew the results might be unreliable, and my colleague was also using that data.

Action: I told my supervisor the same day, explained exactly which runs were affected, and suggested repeating them with fresh reagent. I also told my colleague so they could check their own work, and I added a simple expiry check to our shared lab sheet.

Result: The repeat runs gave slightly different values, so my conclusion became more cautious but more honest. My supervisor adopted the checklist for the group. I learned that integrity matters most when it is inconvenient, and in a clinical service the same choice could affect a patient's diagnosis, which is why I would always raise a concern early.

What are common STP interview mistakes?

Most candidates who struggle know enough science. They lose marks on structure, clarity and insight.

Reciting textbook facts without linking the science to patients or the service.
Talking for too long and getting moved on before reaching your key point.
Using jargon when the question asks you to explain something to a non-specialist.
Saying "we" throughout so the panel cannot tell what you did.
Guessing rather than honestly saying you are unsure and reasoning aloud.
Thin motivation, such as wanting a funded MSc, without showing you understand the specialism.
Ignoring the online setting: poor sound, a busy background or not testing the platform. Notes and outside help are not allowed, so do not plan to rely on them.

How should I prepare for the STP interview?

Start once you apply, not when the invite arrives. A simple plan over three to four weeks works well for many people.

Week 1: read the current person specification, applicant guidance and your own application. List the evidence you can give for each criterion.
Week 2: revise the core science of each specialism you applied for. Read about how the service works, recent developments and how results reach patients.
Week 3: build six to eight STAR examples covering integrity, teamwork, leadership, resilience, communication and learning from mistakes. Practise answers out loud to a timer.
Week 4: run mock interviews with a careers service, lecturer, supervisor or current trainee, and practise explaining a technical idea simply. Test your camera, sound and room.
Useful sources: NSHCS guidance and sample SJT material, university careers services, professional bodies for your specialism, and clinical scientists willing to talk about their work. Healthcare Interview Prep has a free NHS values guide and written practice questions with model answers for healthcare science roles; it is a self-study resource, not live coaching or mock interviews.

Frequently asked questions

How long is the STP interview?

Recent NSHCS guidance has described an online panel interview lasting up to about 50 minutes, sometimes finishing early if the panel has enough information. Earlier cycles used in-person mini interview stations of around ten minutes each. Formats and timings can change between recruitment cycles, so always check your invitation and the current applicant guidance before the day, and practise keeping each answer to a few minutes.

What is the STP situational judgement test?

The situational judgement test is an online test taken with your application. You read work-based scenarios and rate how appropriate each possible response is. It looks at qualities such as empathy, integrity, teamwork and adaptability, and you must pass a threshold to be longlisted. Use only the official guidance and sample test linked from the NSHCS website, as unofficial materials may be inaccurate.

Do you need work experience to get onto the STP?

Paid healthcare experience is not always essential, but you need evidence that you understand the specialism and the role of clinical scientists. Lab work, research projects, shadowing, talking to scientists, volunteering or relevant jobs can all help. Check the person specification for the cycle you apply in, because it sets out the qualifications and experience that shortlisters and interview panels will score.

How do I prepare for STP specialist science questions?

Revise the core science behind your specialism, then focus on how the service works in practice: which tests or techniques it uses, how results reach clinicians and patients, and what is changing in the field. Practise explaining one technical concept simply. If you applied for several specialisms, prepare each one, because panels expect you to show genuine understanding of the area you are interviewing for.

Can I reapply to the STP if my interview goes badly?

Yes, many people apply more than once. Feedback is usually released after the recruitment cycle ends, so use it to see which areas scored lower. Then build more relevant experience, deepen your specialism knowledge and practise structured answers. Each cycle has its own application, test and interview, so check current eligibility and guidance before reapplying rather than relying on what happened last year.

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