At the UK warehouse in "FNG", the exit sign above the door is the U.S. version, not the British one. The British one is green with a running man, whereas the U.S. one simply says "EXIT".
A lot of the vehicles driving around the British base in "FNG" are Russian.
There are M1 Abrams tanks driving around the British base in "FNG", even though the UK military does not use that tank.