You can actually become an engineer without any qualifications, although this is really unusual. I once worked with a brilliant electronics engineer who had no formal qualifications. He taut himself at home and become an excellent ‘hands-on’ practical engineer.
But the quickest route – and far more normal – is to get qualified. Ideally a Degree in a technical subject is required, which means you’ll need good A levels in something like physics, maths. If you’re not too good at exams like me, you can still become a successful engineer by becoming an apprentice – this is the route I went as I had no A-levels.
It depends what kind of engineer you want to be, and there are lots of different areas – mechanical, aeronautical, thermal, biomedical, chemical, MAterial… You can probably tell that most of these are related to a science, so some kind of science and maths is a good place to start with A Levels. After that you can do a degree in engineering directly or maybe do a science degree and then do a masters in engineering (that’s what I did). Apprenticeships are also a good way to become an engineer.
There are lots of ways to become an engineer.
One route is to do something academic with maths – so a degree in physics or engineering would work there (but that’s not the only choice) you’ll also need good grades to get a great job too.
The other route is apprenticeships: for these you are employed and your employer pays some (if not all) of your studying to HNC/ HND, some places all help fund study to degree level, but you’ll need to look around.