Agentic Delivery: Rethinking the Economics of Legacy Modernisation

Wednesday, September 23, 2026 10:30 AM to 11:00 AM · 30 min. (Europe/London)
AI Theatre
Partner Session
Artificial IntelligenceData-Driven Technologies

Information

Legacy technology is one of the biggest constraints on public sector digital ambition. Modernisation has meant multi-year, high-risk, expensive programmes, so departments defer it and technical debt compounds. Most of the cost sits in human effort: reading undocumented code, mapping dependencies, planning migrations, rewriting and testing at scale.

Agentic delivery changes the maths. Coordinated AI agents can explore a legacy codebase, plan a migration, and write and verify changes, with engineers governing and approving the work rather than doing all of it by hand. As that manual effort drops, so does the cost, and modernisation becomes a continuous activity rather than a once-a-decade programme.

This session covers what agentic delivery actually is (and how it differs from AI copilots), where it reduces cost and time, the governance and assurance needed to use it safely in regulated environments, and an honest account of what is proven today and what is not yet.

What you'll leave with:

  • Where the real cost of legacy modernisation sits: why most of it is human effort (reading undocumented code, mapping dependencies, testing) and which parts agents can take on.
  • What agentic delivery actually means, and how it differs from AI copilots.
  • How the economics shift when agents do the grind, and what it means to treat modernisation as continuous rather than a one-off programme.
  • How to keep it safe in regulated environments: engineers in control, changes auditable, autonomy bounded.
  • An honest view of what works today and what does not yet, so you can judge where it fits your systems.
Day
23 September 2026
ElsewhenD60Elsewhen is a London-based digital and AI consultancy that helps organisations become the most effective and productive version of themselves. Since 2011, we have integrated strategy, design, transformation, and engineering to deliver mission-critical outcomes. Today, our AI Productivity Platform helps public sector organisations move from isolated pilots to scalable, agentic systems that deliver measurable productivity gains and lasting social value. We work exclusively with public sector clients through established procurement frameworks including G-Cloud 14, Digital Outcomes and Specialists 7, the Artificial Intelligence DPS, and NEPRO3, and hold Cyber Essentials Plus accreditation. The UK public sector faces a productivity crisis three decades in the making. The OBR estimates that effective AI adoption could unlock £41 billion in savings, and the Tony Blair Institute puts ROI at 9x for every £1 invested. We help government and public bodies capture that opportunity by moving beyond innovation exercises toward systemic, agentic transformation grounded in real data and real outcomes. Our approach is built on four principles: connecting AI directly to proprietary data for accuracy and governance, keeping subject matter experts in the loop at every decision point, building agentic systems that orchestrate end-to-end workflows at scale, and tailoring every solution to the organisation's existing stack so there is no rip and replace. Recognised by the Financial Times as one of the UK's Leading Management Consultants 2025 and among Europe's FT1000 fastest-growing companies, we are trusted by FTSE 100 and S&P 500 leaders including Google, Mastercard, Spotify, Microsoft, Chase, Citi, Tesco, and Bupa. For public sector enquiries: gov@elsewhen.com

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