Applied online. A phone interview, fully technical. Shortlisted for Assessment Day. It took 5 hours on Assessment day. Started with a presentation about myself infront of 5 Managers from different sections of Rolls Royce. Then a team exercise to build a tower from spaghetti sticks. After that a 1:1 technical interview, which was no doubt difficult. And then SHL test consisting of basic Maths and English reading. Maths was very basic with Percentages and Ratios but English was a bit confusing. Shortlisted after Assessment day for a panel interview, which was all based on previous experience and technical knowledge of the field applied for.