How exciting! The big round building that is less than 2 miles from my house is now involved in a Trump dispute. As this video proves, GCHQ has been monitoring mr trump for years.
One of the blockbusters from Snowden is that your "big round building" was using the NSA databases to get around the UK's privacy laws. So it's work asking if other countries who have intelligence agreements could be doing the same thing, including the US. I'm not saying it's happening but it remains a possibility since GCHQ did the same thing.
This morning "Talking Points Memo" refers to the "bogus" claims the British spied on Trump: "Bogus" means false, untrue. How does Talking Points Memo know Trump's claims are not true? This doesn't seem like a very intelligent discussion; Trump's claim is false because someone denies it? Well Trump is a pathological liar and the British wouldn't spy on Trump? They'd admit it if caught?