I have before me a personal specification from the UK CAA for an employment application.
It is a requirement that applicants must be citizens of the United Kingdom, the Commonwealth, or of the European Union, or a national from Switzerland. (verbatim)
I am no more than a little surprised that the Swiss have more than one language for the very successful operation of their country.
There be gnomes in them thar hills! Clever fellows. Off to buy another Rolex.