On 20th June 2019 the RSGB released the Examinations Standards Committee (ESC) report which covers 2018 and has some limited data for the first 3 months of 2019
During 2018 they were a total of 2592 candidates for all three levels of exam but only 234 of them were women, just 9%
it is seen that over the past five years there has been a slow decline in the number of Foundation candidates, averaging about 2% per year
the Intermediate pass rate, which increased to 96% in 2018, suggests that the exam does not discriminate sufficiently well between candidates
Proposed new single exam to go straight to Full licence - "The Examinations Group have prepared a draft syllabus, based on Syllabus 2019, for an exam that will provide direct entry to a Full licence, like the old RAE."
"The ESC has agreed that the syllabus will be put out for consultation in the UK amateur radio community. This consultation will take place later in 2019."
A table is provided giving candidates average ages. It appears the exams mainly appeal to people in late-middle age. The Foundation exam attracts the "youngest" people with an average age of 44 years-old.
The age breakdown given for Region 8 (Northern Ireland) appears unusual. These average ages are given:
Foundation - 48
Intermediate - 38
Advanced - 38
These figures are used to provide an overall average age which appears as 53 ?
ESC annual report issued May 2019 - https://rsgb.org/main/blog/category/examination-standards-committee-reports/