TIL: UK Supreme Court judge mandatory retirement

[timelets]

Once appointed, UKSC Justices can serve “during good behaviour’’ until the mandatory retirement age of 70 (for judges appointed to the bench after 31st March 1995) or 75 (for those appointed
before 31 March 1995).

https://www.supremecourt.uk/docs/scotus-and-uksc-comparative-learning-tool.pdf

This is quite rational. Appointing judges for life is a vestige of times when life expectancy was much less than 60 years.