Unfortunately you have been rather slow to claim this.
The Department for Work and Pensions (DWP) LEAP exercise (Legal Entitlements and Administrative Practices) was a systematic review launched in January 2021 to find and fix historical State Pension underpayments which included Home Responsibilities Protection (HRP).
The annual report of the National Insurance Fund for 2025/26 states that the LEAP exercise has now closed with all outstanding cases cleared in 2025/2026 and no remaining provision at year end. The HRP LEAP exercise has now concluded with remaining cases managed through business-as-usual processes. A provision of £22 million remains at 31 March 2026 (£30 million in 2024 to 2025) to reflect the estimated cost of resolving outstanding cases.
In other words, there is no longer a dedicated team looking at cases and, as many of us will have experienced, “business-as-usual” with the DWP can be very slow.
Six months with no action at all isn’t acceptable. Write to your MP to get this moving.