RIP HP and University entrance forms

Today sees the last bottle of UK produced HP sauce roll off the production line in Aston.
There is also much in the news about students applying for university having to declare the level of parental education, and occupation type.
I have often joked in the past that you could gain sociodemographic information from asking a simple question of how do you take a bacon butty (red or brown sauce, white or brown bread). Like most sociodemographic indicators its not 100%, but can provide clues.
We often find that on UCAS forms that where applications describe their parents occupation type, they generally overstate. I can see similar issues declaring parental education levels (both of my parents were teachers, but went to teacher training college, and not university, so I was a first timer in our family).