Edam, from your last sentence, I fear you are living in the past.
Interesting to think we have talent in science, technology and manufacturing ... the education system is of course churning out all the footsoldiers we need in this area 
I did not go through the British education system. Broadly speaking, you so do not have an education system that nurtures that sort of industry. However, your talent is in the creativity, innovation, communication and diversity. All perfect for a thriving financial services.
I am not saying we cannot or should not go back to a manufacturing base. But it will involve a lot more than just talk and hotair.