Menwith Hill - US/UK Relations

Currently waiting for a response from Ministry of Defence, they should respond promptly and normally no later than (details).

Dear Ministry of Defence,

I would like to know about the nature of the agreement between the US and UK in relation to Menwith Hill, as I am aware that British personnel currently are employed there. Please can you let me know whether the operations run at Menwith Hill are joint between US and UK?

Yours faithfully,

Dunya Kamal