Got contacted on LinkedIn. Applied online. Had to do an online coding test on hackerrank. Fairly simple, use of vectors/arrays. Invited to the Assessment day in their Woking headquarters. 2 group tasks (mostly logic, team cooperation and work), as well as 2 individual (a face-to-face interview with technical questions and personality questions, and then an individual coding challenge). Chance to participate to a networking lunch while there. They prefer C++ over any other language.