We tried to reduce the exams to 3 'double' and 3 'single' subject exams, which would also fit in with the 6 'sittings' (which we're trying to have removed from the regulations at PPL level) - the way it used to be, before 'headshrinker horse$hit' HP&L was introduced, if you include the RT theory exam. However, the CAA looked at this and advised us that the costs associated with such a change would be significant for the short time before e-exams are available - so the present 120 questions remain, although the real rubbish has been binned.
The next iteration will probably be the PPL/LAPL 'e-exam' - 9 subject groups but we expect the system to allow an applicant to attempt as many sections at any one time as he/she wishes. All of which will be debriefed by the examiner - a fail will be given general guidance and a pass with less than 100% will receive a detailed debrief.