The trade numbers for December last year are out. Turns out we exported lots of services during the month but imported a greater value of goods. Specifically:
That is, we were £3.3bn in the red. Here's a graphical representation of our trade balance over the last couple of decades:
So as you can see, services, ie the City, are generally positive but we alway have a net outflow of wealth thanks to our habit of buying foreign goods, starting with 40% of the food we eat.
We haven't actually had a genuine sustained positive trade balance since the early 1980s.