The UK national debt is only 62% and people pay to lend money to the UK. For every £100 lent to the UK government for 1 year, you get £97 back as the inflation rate is way higher than the interest rate.
The 62% are a nice number, the important line is the red one athttp://www.economicshelp.org/blog/334/uk-economy/uk-national-debt/
under "Debt including Financial sector intervention"
This is the amount, the government has to finance, and to cope with it. The banks with a huge profit can pay back the money. But these (most of them) banks are taking huge risks. So they are the "bank run"-candidates.
Your point about Austria is correct. However, the same logic does not apply to places like Greece and Spain as they are not important partners of Germany.
The really important partners are euro-zone-partners. It's the same.
The problem is, that the EU-money didn't cause changes in the economic structure.