"We don't "say" GBP": many people do, actually, at least in contexts where one normally uses ISO codes. "British citizen" is the statutory name of citizenship of the UK, so it's not so much a choice of the government (in the sense of the particular set of ministers in place at any given time) as of parliament.
Yahoo: People flock to the Brooklyn Botanical Garden to enjoy the spring heat
People flocked to the Brooklyn Botanical Garden in New York to enjoy the record-breaking hit that is sweeping the area. Numerous cities are seeing their first 90 degree day in over a decade across ...
People flock to the Brooklyn Botanical Garden to enjoy the spring heat