I applied online. I interviewed at Rolls-Royce (Derby, England) in Dec 2015
Interview
Assessment day composed of a 10 minute presentation on why they should wire you followed by 30mins of competency based questions mainly based on what you talked about.
Numerical test, same than the only one, except that they changed the names of the companies and services in the charts/tables.
Group exercise: Build a sort of bridge for a ball and a marble to roll into a cup. The ball and marble are to be dropped at the same time. Cost and time restraints