Yes, I know that the UK is part of the Five Eyes alliance.
https://en.wikipedia.org/wiki/Five_Eyes
>Documents leaked by Snowden in 2013 revealed that the FVEY have been spying on one another's citizens and sharing the collected information with each other in order to circumvent restrictive domestic regulations on surveillance of citizens.
So not only is the UK spying on us, we've explicitly allowed it to in some cases as long as they share some of what they've found. Do you honestly believe that the UK only spies on us lowly citizens and doesn't spy on politicians?