Newly published documents from Edward Snowden have shed more light on American surveillance operations in the UK. The Intercept details how the NSA and GCHQ used information gathered by Menwith Hill Station, a massive but tightly sealed facility that intercepts satellite data transmissions worldwide. Among other things, the files appear to include evidence that links UK-based surveillance to American anti-terrorism campaigns outside official combat zones.
This leak fuels existing suspicions that the UK’s role in American covert drone strikes is greater than it admits — potentially implicating it in the civilian deaths that have resulted.
You can read more in an article in The Intercept at http://goo.gl/wEVo8a.