Danny,
Like anything on the interweb I'm not sure of it's credibility, but there is a good read on the BFTS scheme here;
http://www.5bfts.org.uk/articles/history/fullhistory.aspx
In part,
In December 1941, the Air Member for training introduced a new plan, which aimed at raising the standards of pilots by providing more flight hours in their pre-OTU stages of training. The training syllabus for RAF EFTS and SFTS schools was extended and the flying hours were raised to 200. To conform to the new syllabus the EFTS course length was raised from 20 to 28 weeks, in January 1942, and the flying hours increased from 150 to 200 hrs. The primary stage now lasted 14 weeks and gave 91 hrs on primary trainers and the basic advanced stage 14 weeks with 109 hrs flying time. It was not possible to increase the ratio of advanced flying to primary flying because of the shortage of advanced trainer aircraft. It also had been hoped to expand the capacity of each school from 200 to 240 pupils, so as to maintain the previous rate of output, but this was impracticable at that time, and the capacities remained unchanged with intakes of pupils (50} every 7 weeks. Output was accordingly reduced to about 1600 per year.