From my experience, PATS really is not necessary for the Qlink aptitude! If you are called for stage 2 then you will be emailed info regarding the online aptitude test you have to do. On there are practice questions you can try at any time before doing the real thing. It's basically Maths and English reasoning followed by a phsyc questionnaire. Don't be tempted into cheating with someone next to you tho, as recent applicants have been asked to do another similar test on the day of the interview. Good luck ✈