Are you suggesting that giving 10 million pounds to Nissan is supporting British manufacturing. Nissan is a Japanese manufacturing company. All the skilled manufactuing jobs are done in Japan. The parts are then imported into Britain, and we do a bit of unskilled assembly work. Assembly work needs no special skills or training. Assembly work is classed as unskilled manual work.
I gave you a link earlier that explains it isn't just assembly work. Did you not read it?