Applied online for a structured graduate scheme position. Did some online testing (verbal, numerical and logical) which wasn't that taxing. Subsequently completed a short competency based recorded video. Got invited to a 1-day assessment centre in Basingstoke, Hampshire. We were assessed on our team-working ability (by creating a group presentation), technical ability (writing out a mock transport plan for a project). Finally I was interviewed by two managers at WSP, which felt more like an informal conversation about my experiences and abilities rather than a stressful 'question-answer-question' formal interview.
Overall, the day was well-organised but intensive. I learned a lot from the process being my first assessment centre. Felt even better to get an offer from the company!