Quote from just21:
When the Treasury cannot sell bonds the Federal Reserve will buy the bonds with printed money. The politically correct term is quantative easing.
The figure of $239 billion of US debt held by the UK, is not the UK government, but hedge funds and sovereign wealth funds who put the trade on through banks in London.
I am not clear on the amount held by the UK gov so you may well be right, my understanding was that of the $338B or so held by UK based accounts 239B was held by the UK gov but I may be wrong.
http://en.wikipedia.org/wiki/List_of_countries_by_foreign_exchange_reserves
http://en.wikipedia.org/wiki/United_States_public_debt

