I applied online. The process took 3 months. I interviewed at Sopra Steria (Hemel Hempstead, England) in Mar 2019
Interview
Fill in a long form, attach a CV. Then a video interview. After that there were physcometric tests, then an assessment centre day where you have the following: 1-2-1 interview, group assessment, individual case study (consultancy practical assessment), a networking test