Initial 1:1 interview lasted about 45 minutes. Asked a few mathematical problem solving questions (same as bellow- how much water flows past a given point at the thames in 24hrs). Then just went through my CV quite standard. Second interview 1.5hrs long including presentation - HR said to email in with any specific requirements so i told them i need both an internet connection and to be able set my macbook up to the projector. I got neither so had to give the presentation on my mac. Rest was very similar to whats already been described. Still haven't heard anything back, interview was over 5 weeks ago and I've emailed their HR twice asking for an update and both time got the reply "We hope to have the results shortly" I'm not optimistic, but will keep at their HR until i get some news. Would not recommend applying to Detica, HR are pathetic and seems to be a waste of both my time and the employees dragged in to give interviews