IIRC, Poland was the EU country that was the focus of attention. Skimming Wikipedia's most definitely totally truthy article on the subject [1] (actually, it h

IIRC, Poland was the EU country that was the focus of attention. Skimming Wikipedia's most definitely totally truthy article on the subject [1] (actually, it has a lot of citations, so it should be easy to verify), the UK's only alleged black site was the US base on Diego Garcia, which is "UK", but not "basement in London". [1] https://en.wikipedia.org/wiki/Black_site#Suspected_black_sites https://en.wikipedia.org/wiki/Black_site#Suspected_black_sit... Edit (T+18 minutes): Wikipedia lists numerous other European countries as possibly being involved. Information is really sketchy -- they are called "black" sites. Another question is which officials in the lucky host countries even knew about it.