The Pensions Act 2014 is an Act of the Parliament of the United Kingdom that received Royal Assent on 14 May 2014. It establishes a new state pension scheme for people who attain state pension age on or after 6 April 2016. From Wikipedia
The Department for Work and Pensions has issued a month-by-month timetable for reaching 67 between April 2026 and April 2028 with a planned further rise to 68 subject to periodic statutory reviews.