From the RSGB website:
"The first annual report of the RSGB Examination Standards Committee has been released.
It includes details such as committee membership, results statistics and reports from officers.
The full report can be found on the RSGB website (12-page/88.2KB PDF)"
An interesting report which among other things show how many people passed he various stages on Amateur Radio exams between 2006 and 2015:
(Click To Enlarge)
As an example, in 2015, 84.9% of those taking the Foundation Exam, 92.5% of those taking the Intermediate Exam and 68.2% of those taking the Advanced Exam achieved the required level to gain the qualification.
So, with around 9 out of 10 people passing the Foundation and Intermediate exams there is no excuse for not giving it a go if you are someone who's been thinking about it!!!!