Dunlop’s took their investment to a whole host of countries including the USSR and Eastern bloc countries iirc, where they took advantage of vastly lower labour costs and could increase their margin.
Thatcher decimated British manufacturing and didn’t just bring the Unions back into line, she crushed them, manufacturing was merely ‘collateral damage’ in her quest.
As I said to Joe in the EU thread yesterday, manufacturing has grown in the UK by an average of around 1.5% per year since the 40s. It's a fallacy that there is no manufacturing in the UK.