In the UK, one in five girls born in 2030 is projected to live to at least 100 years old, as estimated by the Office for National Statistics. Boys, however, have a lower life expectancy, with over one in eight born in 2030 anticipated to reach 100, rising to one in six by 2047. For girls born in 2023, the average life expectancy is 90.0 years, while boys can expect to live to 86.7 years, with these numbers increasing for those born in 2047. The difference in life expectancy between males and females at birth has decreased from 4.4 years in 1981 to 3.4 years in 2023, according to recent data.