From the brief time I did work experience there, it was highly professional. It opened my eyes to how serious and organized systems are, especially in the public sector.
I learnt how to approach an interview, with their practice session.
They're excellent at managing sites which may damage the environment under legislation and they have good branches committed to such caused/ their enforcement.
From what I saw, the hardest part would be keeping up with terminology, with a lot of environmental terms (especially chemicals, appearing as acronyms)
A very precise work ethic