According to Office for National Statistics (ONS) life tables (2020 release, based on 2017–2019 mortality rates), of the approximately 823,000 babies born in England and Wales between mid-1960 and mid-1961, about 71% were projected to survive to their 60th birthday.
Actual survival for this cohort (now early 60s) is likely higher — mortality has improved since 2019, especially for cardiovascular disease. ONS 2022 cohort projections suggest ~78–80% may reach 65.
For precise individual probabilities, actuaries use cohort life tables with mortality improvement projections — but 71% to 60 is the benchmark ONS figure for this generation.