Public service pensions which have been in payment for a year will be increased by 6.7% from 8 April 2024 in line with the September-to-September increase in the Consumer Price Index (CPI). Any pension which has been in payment for less than a year will be increased by a proportionate amount depending on the number of months it has been in payment.
https://www.gov.uk/government/publications/public-service-pensions-increase-2024
More information can be found here on the UK Parliament website:
Written statements – Written questions, answers and statements – UK Parliament