It is about the small / medium size manufacturing companies, go down to Newhaven, all them have gone. That is the problem there is still not enough of it. My facts are right because I can see it with my own eyes. The last sucker punch for Newhaven was Parker Pen, I think they went to France, so it shows even when your in the EU it doesn't stop companies moving.
Here is an article from The Argus 2009
http://www.theargus.co.uk/news/4497779.Parker_Pen_Newhaven_closure_plan_revealed/
You ignore the wider picture across the country. That might be the case for Newhaven and there are many factors that may have contributed. But come to Burgess Hill the industrial estates here are pretty dam busy!