About the export stuff, I wouldn't look at things negatively. As it so happens, most developed and mature economies have gone way beyond being a manufacturing nation (almost everything can be manufactured elsewhere for lesser money). What these countries have moved into is "services". From education, healthcare, tourism and financial services.
This is where the UK comes into play. This is where the UK needs to focus and it does so very well.
The cheaper £ may be bad for the UK public going abroad, but it is wonderful for bringing in hard currency; which is badly needed at times like this.
With regards to the credit crunch, this is a sad repercussion of very bad central bank monitoring. Some even go so far as to say that some banks have bribed government officials (not in UK, but in USA) to turn a bling eye at the financial instruments that were to create this mess (securitisation of sub prime loans). Still, what people need to keep in mind is that market trends are a natural by-product of any semi-free economy (I say semi-free as I don't believe there is a free economy per se); and with these trends there will always be up times just as well as down times. What we are witnessing now, is the down time.
Sadly, what is fueling the problem, as has been said here already, is the media frenzy. This is creating a psychological fear that is making people weary of the days to come. These people, you, me, the next person, everyone ... gets worried and takes drastic action to try to remedy the situation by draconian practices (job cuts, overly-prudent business practices etc.) which drives the real economy down.
Is this one going to be worse than that of the 1980s? Sadly, yes; but not because it is any worse in terms of the real business practice and slump, but because of the cheap availability of media, the cheap availability of idiots who make silly comments, and the mass frenzy who read the tabloids.
This does not mean banks are not guilty of what's happening, far from it. As an ex-banker (dare I say, in lending) I believe banks are the least of ethical and legal business practices, only beaten to the pits by politics. I also believe that semi-free countries, such as the UK, should be looking at investigating the legitimacy and legality of the sub-prime loans, its securitisation and the central banks' lack of control (but that's another subject).
So, hold on to what you've got. Try to sleep this through, as it's not an easy thing to live through a recession. If you can take time off work (sabbatical leave, etc.) then by all means do so. It is better for your resume to state that you left for further education, than to state that you were made redundant.