Seemingly you have way to much money and your not spending it enough. So interest rates need to go negative to make sure you spend your money so you have to borrow more… but we will charge you interest in the “retail market”of course.
Is that it?
Bank of England ‘acting to spread shock of crisis’

Bank of England ‘acting to spread shock of crisis’ – BBC News
Here is another angle on markets today.
The thing to remember about trading is like it’s going to the bookies. The bookies win. Most day traders go bust for example, so the glib adverts are typically from guys who need your money. That’s it. It’s a good idea to learn about what goes on though, that’s for sure.