Actually, people who are given OBEs are nominated and go through a long vetting process, during which the nominator has to prove and decision committee consider whether the person has performed some meritorious service for the British Empire.
OBE nominees do not even have to be living in the UK, they just need to be a citizen of a Commonwealth country. When I was living in Australia they always published the list of various OBE nominees each year, then would publish another list of those who were actually accepted for the award.