Hmmm. Higher per capita than France (which is supposedly near bankrupt) and Greece?
IMO: The cost of interest is more important than the debt total and we hae no doubt been paying interest on interest for years.
Don't forget that since just after the Brexit vote we lost our 'coveted' AAA rating so we're presumably paying more interest. None of the Quit promoters said we were 'taking back control' that day! And recent comment from S&P suggested it 'may' be lowered further if feedback from negotiations is not good => higher interest.
Also, due to the pound on the currency markets (which those 'in the know' tell us: 'Don't worry, currencies go up and down all the time) any debts owed in US Dollars etc are costing at least 15% more (both the principal repayment and the debt).
Of course there was a global financial system. It might not be the one recognised today but that doesn't mean it didn't exist. Banks, Tongs, clearing houses, insurance houses were all linked by telegraph; stock markets were just as sophisticated but used blackboards and ticker tape.
In terms of loan deals, we had one main loan with the US which was definitely not agreed behind closed doors but openly debated in Parliament.
What makes you think that we could not service a huge debt now as we did then? Put into context we lost the economic output of the Empire because of the war and were forced to restructure our economy for that war. We then had to restructure it afterwards. We didn't have the NHS or social services as we do now so the economy was not as inherently resilient and productive as it is today; the time lost through sickness was around an order of magnitude greater than today for example.
I take your point with personal debt but we are not discussing that in this thread.
Who are we in debt to? China, the IMF?
Who are we in debt to? China, the IMF?