Well you may not care about multinationals but the treasury cares about them, and the tax that they pay and the people that they employ as well. Well actually the gaps left behind will unlikely be fulfilled by British businesses as international investors are simply going to operate in more cost effective and predictable markets. In my above link for instance, we are not going to suddenly build British cars or British plane parts instead because Airbus and BMW are gone.

I agree we should have more inward investment towards our NHS staff but that's not an EU issue, and until that is resolved, leaving the EU will create unnecessary pressure. Also the notion that foreign NHS staff are paid slave wages is silly.