A woman I know who is a professional athlete acquired dual citizenship for the purpose of making it easy to live in and travel around Europe where the bulk of her events take place.
Fortunately for her, the process was quite easy as the Brits practically throw passports at anyone who is a bit sporty. Unfortunately, that also means that she will land back at square one in the event of a Hard Brexit.
On that subject of athletes changing nationality, the Australian
track cyclist Shane Perkins was granted his Russian citizenship by Vladimir Putin this week as part of his plan to try and get into the 2020 Olympics despite being too slow to make the Australian team these days. He's actually quite thick, so maybe it's not such a bad thing that he's out of the running for the Parliament here.