Stop Facebook using GPS I have set location to off but I can see it is still trying to use GPS from the icon in the top left corner.

Where in the settings can I switch this off for Facebook only? Despite Messenger location servvices being set to Off, everytime I open the app it tries to get a GPS lock.

I am running the latest stock Nexus 4 firmware and Android 4.2.
AFAIK PDroid is the best solution. (Except you need to be rooted) You could even set a custom GPS location per app.

Permission Explorer is a good alternative.