http://cryptome.org/2013/07/snowden-spiegel-13-0707-en.htm
Interviewer: What are some of the big surveillance programs that are active today and how do international partners aid the NSA?
Snowden: In some cases, the so-called Five Eye Partners 4 go beyond what NSA itself does. For instance, the UK's General Communications Headquarters (GCHQ) has a system called TEMPORA. TEMPORA is the signals intelligence community's first "full-take" Internet buffer that doesn't care about content type and pays only marginal attention to the Human Rights Act. It snarfs everything, in a rolling buffer to allow retroactive investigation without missing a single bit. Right now the buffer can hold three days of traffic, but that's being improved. Three days may not sound like much, but remember that that's not metadata. "Full-take" means it doesn't miss anything, and ingests the entirety of each circuit's capacity. If you send a single ICMP packet 5 and it routes through the UK, we get it. If you download something and the CDN (Content Delivery Network) happens to serve from the UK, we get it. If your sick daughter's medical records get processed at a London call center … well, you get the idea.
Interviewer: Is there a way of circumventing that?
Snowden: As a general rule, so long as you have any choice at all, you should never route through or peer with the UK under any circumstances. Their fibers are radioactive, and even the Queen's selfies to the pool boy get logged.
