Hi Sam,
Not exactly the answer you'll be looking for - I did HAVO before flight training and translated that into A levels for all the subjects I scored an 8 or higher (there were a few!!
) for. My first UK employer didn't really make an issue then about that anymore, maybe because they have had more Dutch guys & girls working for them.
Does that help you in any way, before I ask the name of the company you're applying with?