My subjects in school were the compulsory English, Irish, maths and then I chose French, physics, chemistry and applied mathematics. All of my subjects were at higher level.

Maths, physics, applied maths and chemistry were definitely beneficial for an engineering degree.

However in hindsight I wish I had taken one business related subject like economics or accountancy.

While my degree was engineering, in the work place I am exposed to a lot of business and I regularly work with financial models.