Of the top of my head I can think of several that aren't included in the list they are generally listed as  bases for local military services, but staffed by US forces. Locals only providing security and Liason.

Secret Bases Part 1 - WWW.SECRET-BASES.CO.UK - © 2009

RAF Croughton near Brackley in Northamptonshire is an old USAF airbase, but no runways have been apparent for many years. The base appears as a significant cluster of aerial symbols. That's because RAF Croughton is the focal point for the US military's communications within Europe.....

Croughton has a transmitter annexe at RAF Barford St. John near Banbury in Oxfordshire. This "disused airfield" is said to provide secure communications facilities for CIA agents and US Diplomatic personnel. The 1:25000 OS map reveals another good old "Wireless Station" label.

Any idiot can face a crisis - it's day to day living that wears you out.