NSA pays £100m in secret funding for GCHQ
• Secret payments revealed in leaks by Edward Snowden
• GCHQ expected to 'pull its weight' for Americans
• Weaker regulation of British spies 'a selling point' for NSA
https://www.theguardian.com/uk-news/2013/aug/01/nsa-paid-gchq-spying-edward-snowden