Just had a bad experience of an adult boasting about passing a grade exam. Have come to the conclusion that many adults here in the UK can't calibrate the standard of grade exams compared to general adult advanced education, or music exams compared to professional orchestral musicians, so I will try to show how the exams for a musician compare to a degree in any other subject.
In terms of a degree, grade 8 is an exam that you would take at school before you start at university. It is the kind of exam that might help you to get a place by showing that you had other interests, but which would not be counted towards your entrance qualifications. It is similar to any badges that you might have got for swimming, or a dancing exam.
Generally or on average an " A" diploma like dip ABRSM or ALCM or ATCL would be the equivalent of an exam that you would take either at school before you start your degree or at the absolute latest before the end of the 1st year. So easier than an end of first year degree exam. The " L" diplomas like LRSM, LTCL, and LLCM might be sometime during the 2nd year so like an extra exam in the second year of an undergraduate degree. The "F" diplomas like FRSM, FTCL and FLCM might be in the 3rd year so a bit like an extra exam in a 3rd year of a degree course, but not as difficult as the end of degree exam.
Someone studying medicine has several more than 3 years of study to complete their time as an undergraduate. A student hoping to become a professional musician would also have several more years of study after FRSM, which is the last music exam.
It is important to remember that for school students end of school exams like A levels, grade exams and the lower music diplomas are the highest achievements at school. Equally it is important to remember that these exams form the bottom of the achievements possible in adult education. So an adult boasting about their school achievements in front of other adults with 1st and 2nd degrees would be regarded as maybe a bit juvenile or even very stupid. This is why it is a very good idea for adults who have taken grade exams as adults not to tell other adults about them, as this comes over as someone who thinks that everyone is interested in what they achieved in their school exams.
Most adults are interested in each others work and lifestyle not what they did at school.