natwest site, bbc, so it is uk as well.
It seems to be totally random...
I can get onto bbc.co.uk (and bbc.com forwards straight to bbc.co.uk - so bbc.com is accessible for me).
NatWest.co.uk is also working for me.
cbc.ca (Canadian Broadcasting) is working, but is tediously slow, so it doesn't look like the transatlantic links are completely down.
Having said that; of all the sites I know (100%) which are hosted in the US are down.
Ade
vDSL2 FTTC Infinity with BT
DL Sync 78Mbps
UL Sync 20Mbps