I kept a diary of the amount of hours I did, and it amounted to around 650. My routine was Mon-Thurs, 7am for 1hr, go to work, and around 2 hrs each evening after getting back from work. I studied all day Sat/Sun. I also had to attend 2 2-week brush up courses, plus the 2 weeks for the exams. The brush-up weeks and exam weeks were very very long days. I reckon we started at around 9am, got back to the B&B at around 6pm, and then worked through until midnight. The exams were a case of sitting the paper, and rushing back to study for the next day.