There are 5.5 million Brits living abroad.
(Studies by the Institute for Public Policy Research, published on the BBC News website indicates that at least 5.5m British-born people live abroad. Seemingly without immigration the British population would be falling. I don’t think the country is collapsing due to my absence though. On researching this interesting fact I discovered that MI5 is warning Brits travelling abroad for work or holidays to be aware of the danger of being accidentally recruited into a foreign power’s intelligence network. Oh dear, I might be leaking important grammar secrets.)