The Cabinet Office was unable to tell us how it will decide which members may be waiting up until March 2027 and explained that this would be determined by the data and how the plan is constructed.25 It said that the data comes from multiple sources, in some cases it is held by employers, in some cases members will need to be contacted directly, and in some cases manual records would need to be examined.26 21 Letter from Cabinet Office, 28 July 2025 22 Qq 58-59 23 Qq 59-60 24 Q 67 25 Q 61 26 Qq 62-64 9 2 Managing the transition Contract management and transitioning to new suppliers