It include the intial application form which is graded and then those who meet their ‘points’ target are invited for stage 2 which is the Compass test. This is basicall a maths test, physics test and nine hand eye coordination tests as well as a personality assesment. A few weeks later if successful you will be invited to stage three which is a team building and interview day. This consists of two team building excercises in the morning and a formal interview in the afternoon. If successful then you move on to the final stage which is a sim check and yet another maths test and then a debrief!
Hope that helps 🙂