Assessment Centres: What to Expect and How to Stand Out
A practical guide to UK assessment centres: what a typical day looks like, each exercise explained, how assessors score you and how to prepare so you can perform at your best.
By Tony Musso on
An assessment centre is a half-day or full-day selection event where an employer watches a group of candidates complete a series of exercises. It is used for graduate schemes, apprenticeships, the police, the Civil Service, the armed forces, banks, retailers and many large employers, usually as the final or second-to-last stage.
They can feel intense, but they are also fair: everyone does the same tasks and is scored against the same criteria by trained assessors. Knowing what to expect takes away most of the nerves. This guide explains each exercise and how to prepare.
What happens at an assessment centre
A typical day looks something like this:
| Time | Activity |
|---|---|
| Arrival | Welcome, introductions and a briefing about the day |
| Morning | Group exercise and a written or in-tray exercise |
| Midday | Lunch, often with current staff (still part of the impression you give) |
| Afternoon | Presentation or role play, then a competency or strengths interview |
| End | Chance to ask questions; results usually follow within one to two weeks |
Many assessment centres are now held online through video calls and online platforms. The exercises are the same, but you need a quiet space, a reliable connection and to be comfortable speaking on camera.
How you are scored
Assessors score you against a set of competencies, the same ones listed in the job description: teamwork, communication, problem solving, leadership, customer focus and so on. Each exercise tests several competencies, and each competency is usually tested in more than one exercise.
That means two important things:
- You are not competing directly with the other candidates. Everyone who meets the standard can be offered a job, depending on the number of places. Helping others often scores well.
- One weak exercise rarely sinks you. Your overall score matters, so keep going even if something goes badly.
The main exercises
Group exercise
You work with four to eight other candidates on a problem, such as ranking items for a survival scenario, planning an event on a budget or choosing between business options. Assessors watch how you contribute, not whether the group reaches the "right" answer.
What scores well:
- Contributing ideas early, then building on others' ideas
- Bringing quieter people in ("Priya, what do you think?")
- Keeping an eye on time and summarising progress
- Disagreeing politely, with reasons
- Making sure the group reaches a decision
What scores badly: talking over people, dominating, staying silent, or arguing to win.
In-tray or e-tray exercise
You play an employee with a full inbox: emails, messages, reports and requests. In a set time, you must prioritise, decide what to do with each item and sometimes draft replies. It tests organisation, judgement and written communication.
Tips: skim everything first before acting, look for links between items (one email often answers another), flag anything urgent or safety-related, and briefly explain your reasoning if you are allowed to.
Presentation
You may be asked to prepare a presentation in advance or given a topic and 20 to 30 minutes to prepare on the day. Presentations are usually five to ten minutes, followed by questions.
Tips: use a clear structure (introduction, three main points, conclusion), keep slides simple, stick to time and treat questions as a conversation. Practise with a timer.
Role play
An actor or assessor plays a customer, colleague or member of the public, and you deal with a situation, such as a complaint, a struggling team member or a difficult conversation. Police and customer-facing roles use role plays heavily.
Tips: read the brief carefully, listen and ask questions before offering solutions, stay calm, be empathetic, and agree clear next steps at the end.
Interview
Most assessment centres include an interview, often competency-based or strengths-based. Prepare examples using the STAR method.
Tests
Some employers include ability tests, such as numerical or verbal reasoning, or a situational judgement test, on the day, especially if you took them unsupervised earlier and they want to confirm your score.
How to prepare
- Read the invitation carefully. It usually lists the exercises, timings and anything to prepare.
- Study the competencies. They are in the job description and on the employer's careers site. Plan how you will show each one.
- Research the employer. Know what they do, recent news and their values. It helps in group discussions and the interview.
- Prepare and rehearse any presentation. Time it and practise answering likely questions.
- Prepare STAR examples for the interview.
- Practise in-tray skills by reading and prioritising a busy set of emails quickly.
- Plan the logistics. Know the route, arrive early, or test your camera and connection for an online day.
On the day
- Assume you are always being assessed, including during breaks and lunch.
- Be friendly to the other candidates. Group exercises go better when people cooperate.
- Don't dwell on mistakes. Each exercise is scored separately.
- Ask good questions when given the chance. Our list of questions to ask at the end of an interview works well here too.
- Look after yourself. Eat, drink water and take a moment between exercises.
Go in knowing your strengths Career Strengths shows what you are naturally good at, so you can lean into it in the group exercise and the interview.
If you are still applying, make sure your CV earns the invitation with our CV builder, and see our interview questions and answers for the final stage.
Frequently asked questions
What is an assessment centre?
A selection event, usually lasting half a day or a full day, where candidates complete exercises such as a group task, an in-tray exercise, a presentation, a role play and an interview. Trained assessors score each candidate against the job's competencies.
How long does an assessment centre last?
Most last between half a day and a full day. Some graduate and police assessment centres run over a longer day, and virtual ones are sometimes split across two sessions.
Are you competing against the other candidates?
Not directly. You are scored against set criteria, so everyone who meets the standard can be offered a role, depending on the number of places. Supporting others in group tasks usually helps your score.
How do I stand out in a group exercise?
Contribute ideas early, listen and build on others' points, bring quieter people in, keep track of time and help the group reach a decision. Dominating or staying silent both score poorly.
How soon will I hear back after an assessment centre?
Usually within one to two weeks. Many employers give feedback if you ask, which is useful even if you are successful.
Related reading
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