Assessment centres are the most comprehensive evaluation employers use. Unlike a single interview, they're designed to observe you across multiple exercises over a half or full day. Each exercise targets different competencies, and the scores are aggregated at the end. That means a weak moment in one exercise doesn't end your chances — but consistent underperformance across the day usually does.
How assessment centres work
The typical structure: several candidates go through the same set of exercises in rotation, observed by trained assessors who score specific competencies. Common exercises include group discussion, in-tray (prioritisation), case presentation, role-play (usually a difficult conversation), and a structured interview.
What's being assessed is usually anchored to a competency framework that the employer uses across the business — often things like communication, analysis, leadership, influencing, commercial awareness, and resilience. The assessors are looking for specific behavioural evidence for each competency, not general impressions.
The key implication: be consistent. Every interaction is observed. The way you treat the administrator, the way you behave during breaks, the way you talk to other candidates — all of it is visible and all of it can influence the final assessment.
Group exercise
Most commonly a discussion exercise where the group must reach a consensus or recommendation within a time limit. Assessors are watching for contribution quality, listening, collaboration, and whether you help the group move toward an outcome.
Key tips: contribute early (it gets harder to enter a conversation late), build on other ideas rather than only introducing new ones, bring in quieter candidates, and watch the time — stepping up to facilitate when the group is running out of time is a positive visible behaviour.
See the full article on group interview tips for detailed guidance.
In-tray or e-tray exercise
You receive a simulated inbox of emails, memos, and requests representing a manager's or analyst's workload. Your task is to triage, prioritise, and often respond to items within a time limit.
What assessors are scoring: prioritisation logic, written communication quality, ability to make decisions with incomplete information, and how you manage competing demands under time pressure.
Before you start, read everything once quickly to understand the full landscape. Then prioritise ruthlessly — what is urgent and important versus what can wait? When responding to items, be concise but specific. Vague responses score poorly. Show your reasoning: "I'm responding to this before X because..."
Presentation exercise
You typically receive a brief and 15-30 minutes to prepare, then deliver a 10-15 minute presentation to assessors who play the role of stakeholders.
Structure is everything. In the time available, a clear three-part structure (situation → analysis → recommendation) with a strong opening and a clear recommendation at the end will score better than a longer but wandering response.
Speak to the audience, not the slides or notes. Check the brief carefully — if they ask for a recommendation, give one. Candidates who hedge and refuse to commit to a view rarely score well in commercial or consulting roles.
Role play exercise
Usually a one-on-one exercise where an assessor plays a role (difficult customer, underperforming employee, sceptical stakeholder) and you must manage the interaction. Most common in management, customer-facing, and sales roles.
The assessors are scoring interpersonal skills: listening, empathy, assertiveness, problem-solving, and composure under pressure. Don't try to "win" the interaction — the goal is to manage it well.
Key tactics: start by listening and understanding the other person's position before stating your own. Acknowledge their feelings before moving to solutions. Stay professional even if the person plays it aggressively. Have a clear objective in mind and work toward it without being rigid.
Individual interview
Usually a competency-based structured interview with the same format as behavioural interviews. You'll be asked for specific examples using a STAR framework (Situation, Task, Action, Result).
Prepare five to eight strong examples from your recent experience that can flex to answer different competency questions. Make sure your examples are specific, recent, and genuine — assessors are skilled at probing, and generic or vague examples fall apart under follow-up questions.