01/08/2013 12:25 BST | Updated 01/10/2013 06:12 BST

NSA Pays £100m In Secret Funding For UK Spy Agency GCHQ

Did the NSA pay £15.5m towards redevelopments at GCHQ’s site?

The US government has paid at least £100m to the UK spy agency GCHQ over the last three years to secure access to and influence over Britain's intelligence gathering programmes. The top secret payments are set out in documents which make clear that the Americans expect a return on the investment, and that GCHQ has to work hard to meet their demands.