Going into engineering without the right prerequisites

Hi Miss Nesli Kohen,
I am a student of A levels in London, however, I am not studying the right subjects for a direct entry in Engineering, Chemical that would be. I looked into foundation courses which would take me an extra year to complete. I absolutely love Chemistry and out of all sciences it was the one I did the best at. Do you think I should pursue Engineering or that I am completely out of my league. I also noticed that you get to travel as part of your job, something that I am also very much interested on. What did you find as being the challenges of your job? Would you say that maths is unbearably hard regardless of how much practice you get ?
Thank you and I hope to hear from you soon.
posted by Lourena , London on August 11, 2014