Certainly,
in England (and the UK and I think the Irish Republic too), we say "free
software". I have seen EU studies that call it "Free/Libre," though.
The US is home to the Free Software Foundation, so I suspect they call it
free software too. Africa has the Free Software and Open Source Foundation
for Africa, so I suspect they call it free software... I'm not there,
though, so I can't say for sure.
Don't believe everything people say: after all, some French people have
tried to tell me that "logiciel libre" is a translation of "open source"
which is rather naughty of them.
I don't believe everything. And that's why I ask anglophone readers
from this list :-)