Eradicating Fujitsu and Horizon from the Post Office, step by step | Computer Weekly
Summary
Paul Anastassi, the Post Office CTO, is leading a programme to remove Fujitsu and replace the Horizon platform, targeting Fujitsu's exit by summer 2027 and complete Horizon eradication by 2030 (possibly earlier). The programme splits into two major procurements: a Lot 1 Walk In Take Over (£323m) to assume Horizon services, migrate to the cloud and build a cloud-native back-office, and a Lot 2 (£169m) to deploy an off-the-shelf, device-agnostic EPOS front end; IBM is among the shortlisted bidders. The Post Office plans a composable, event-driven architecture that will buy SaaS for utility components while keeping core product logic in-house, and it will maintain Horizon for about 11,000 businesses during the migration. Subpostmasters are embedded in assessments and feedback loops, and the CTO says the new approach should improve reliability, standards compliance and reduce long-run costs, though final offers will determine total project cost.