In case of interest, I asked Emanuel for feedback on DS exam performance (he didn't get shortlisted for second round) and they were very helpful. The pass mark for English and Math was 65% and a score of 115+ for VR.
The lady didn't give me the actual scores but indicated that he comfortably passed Maths and VR, with Maths being his strongest performance. The strange thing for us is that English (his best subject) was where he slipped up. Not that it changes anything, but an interesting insight and I'm happy he did well in the other papers, which softens the blow!