when you arrive they brief you about the company and various pathways The first part of the assessment is a 1 hour venn diagram and set notation test, i'd advise you get some practice beforehand otherwise you'll spend quite sometime familiarizing yourself with the concept. You have a break to tour the premises and then come back for an general aptitude test for e.g how many grammatical errors are in this sentence? and a few IT questions for e.g which is bigger TB GB MB etc. After which you have a lunch break. The last part of the assessment is a 30 mins maths test which in general is basic, however no calculators allowed. Then you have three 5mins 1:1 interviews