Thanks for the sympathy guys
, although I'm hoping their assesment criteria in the interview will have 'adapted' to take into consideration the exhaustion toward the end of the day!
The way it's phrased on the mail from CTC explaining the day is as follows:
If you successfully pass the morning session you may then be invited to stay for an interview in the afternoon. Results of the morning session will then be delivered face to face, however feedback will not be provided due to the volume of candidates and constraints of the timetable.
Brutal