I applied online. The process took 3 months. I interviewed at Centrica (Windsor, South West England, England) in Feb 2017
Interview
Welcomed by current graduates on the programme and straight into ice breaker activity with the assessors. There were 3 parts on the Assessment Centre day, including: (1) group exercise, (2) interview, and (3) presentation. 2 and 3 can be interchangeable depending on your assessors' availability. For (1), was given reading material and some time to go over these on your own before discussing the topic. The whole panel of assessors will be sat across the table so do make sure you speak aloud and clearly. We were asked to present our ideas at the end followed by some questions. For (2), fairly simple and straightforward, classic competency qs. Qs are picked from your pre-employment tests results. Make sure you research the business line well as well as the energy sector holistically (market trends, Ofgem legislation put in place etc.). (3) would be easier, personally, because info was given regarding a topic for you to do research on 1 week prior to the AC. Best thing? You are allowed to bring in notes to do your flip charts. Make sure you have logical solutions to the problem and again, research the big picture.