Applied online and heard back about a week later. 1st round included 3 tests (excel, financial markets and numerical) and an interview. the tests were really straightforward - make sure you understand how to use VLOOKUP, make pivot tables and use basic functions (like SUM, AVG etc). the numerical was particularly easy and the financial markets one was multiple choice. interview was relaxed - questions about my degree choice, why factset, why finance, why consulting, describe a day in the life of a consultant, what differentiates factset, run through your last 3 work experiences etc.
Heard back that evening that i was invited to the assessment centre next week. this included a group exercise (prioritising assignments), a talk and short exercise about how the factset platform works, lunch with two consultants, and finally a preprepared 10 minute teach exercise each applicant had to present about a subject of their choice.