I do not see it as bad as you, obviously, i really do not think Great Britain is off the stage in any respect
But i could throw in some cheap advice:
1. Go off the financial market, do not rely on financial juggling as the sole means of wealth (because you only generate debt, and the breakdown of the middle class)
2. Ban interest (and screw the banks and their promises).
3. Begin to produce something real again; you have been great at it, you will be again.
4. Decide what you want to do. Finally get along with the EU, or create an exclusive five-eyes commercial zone.
I know what the EU will say to this
P.S: on a cynical sidenote: Maybe you should use your information advantage, and put your GCHQ industrial spying results to some better use
