Since discussion of what to do about the UK's economy seems to get a lively and wide-ranging response on this forum, I thought I would point to this Robert Peston article -
http://www.bbc.co.uk/news/business-15820601 .
It seems the UK's debt is roughly equivalent to 500% of GDP - i.e. 5 x what we make in a year. Surprisingly perhaps relatively little of this is down to Government debt, although that is increasing. about 100% is household debt, 100%+ is company debt, and 200%+ is owed by financial institutions. Robert Peston has two BBC2 programmes addressing the issue in the near future (no surprise there then).