A03Delivery risk: AmberGate: pending
Turn investment promises into a deliverable pipeline
Existing action A03, assessed at the same scope.
Provisional single-reviewer assessment; not an approved business case.
- Who and where
- Users of transport, energy, water, digital and public-service infrastructure across the UK; construction firms and their workforce. (from the action record) Jurisdiction: UK.
- Result so far
- Range if completed: 15.0–21.0 out of 30 (equal weights; not yet assessed: expected incremental benefit (Bn), incremental affordability (Co))
- Funded now (baseline)
- Already government policy: the 10 Year Infrastructure Strategy (June 2025) commits at least £725bn over a decade and launched an online Infrastructure Pipeline in July 2025, updated at least every six months. UK Facts’ addition is to separate approved from aspirational projects on the page and to count completed, used assets rather than announcements. (from the action record)
- The change assessed (marginal)
- Approved-versus-aspirational status, milestones and completed assets in the infrastructure pipeline. (from the superseded 4 October selection table)
- Domain home: Growth & productivity
- In the national plan: Growth and prosperity list
- Previous version: NP5: Publish what is ready to build — projects and housing sites — with each blocker’s owner and cost (4 October 2026 slate, superseded 7 October 2026).
What the evidence supports—and the next decision
A pipeline makes intended investment visible; it does not make every listed project approved, affordable or deliverable.
AI-assisted analytical follow-up · 8 October 2026. Proposed appraisal design; the attributed scores below are unchanged. No funding or delivery agreement is implied.
- Define the change
- Publish approval status, milestones, whole-life cost and delivery confidence for a defined portfolio, alongside the existing pipeline.
- Test whether it works
- Compare forecast and actual completion, service availability and cost at successive decision points. Record cancelled projects and changed scope rather than dropping them from the denominator.
- Establish the cost
- Appraise projects individually with maintenance, renewal, optimism bias and opportunity cost. Keep the small cost of better portfolio information separate from the assets themselves.
- Protect against harm
- Do not promise simultaneous delivery beyond shared construction, grid or specialist capacity.
Read with the outcome evidence and sources in the full assessment. Monitoring proposals are not existing baseline measurements. A numerical benefit or cost score needs evidence for the defined increment, not just the scale of the problem.
Full assessment of Turn investment promises into a deliverable pipeline: ten criteria, scenarios, delivery, costs and monitoring
The ten criteria (0–3)
Each criterion is scored 0 to 3 by the reviewer. “Not yet assessed” means unknown: it is never counted as zero.
Scale and severity (Sc)3 of 3 — Severe harm across a broad population
Reviewer’s reason: Provisional problem-importance judgement from linked site pages; not the scale of achievable benefit.
Increment beyond baseline (Ad)2 of 3 — Specific material change to existing delivery
Reviewer’s reason: Distinguish funded projects from aspirations; sequence resources; name owners and independent assurance; protect maintenance. A missing rating requires a defined marginal change.
Confidence in the proposed action (Ev)1 of 3 — Indirect, mixed, modelled or weak causal support
Reviewer’s reason: Macro modelling and delivery audits support the rationale; they do not evaluate the incremental publication or coordination change.
Expected incremental benefit (Bn)Not yet assessed
Reviewer’s reason: Unknown unless a reasonably defined target-population benefit can be judged; no bonus merely for spanning domains.
Residual harms (Hm)2 of 3 — Manageable harm with specified safeguards
Reviewer’s reason: Double-counting housing/grid benefits; shared workforce bottlenecks.
Incremental affordability (Co)Not yet assessed
Reviewer’s reason: Project lifetime costs, optimism bias, maintenance, financing and the coordination team. The headline strategy is an overlapping envelope.
Delivery capacity (Ca)1 of 3 — Binding scarce resource
Reviewer’s reason: Distinguish funded projects from aspirations; sequence resources; name owners and independent assurance; protect maintenance.
Distribution (Fa)2 of 3 — Mixed or broadly neutral with safeguards
Reviewer’s reason: Provisional distribution judgement for the stated target; verify who pays, who gains and excluded groups.
Meaningful first outcome (Ti)2 of 3 — More than one and up to three years
Reviewer’s reason: First meaningful outcome, not announcement: Milestones, outturn cost and service outcomes for selected projects.
Readiness (Rd)2 of 3 — Named commissioning/allocation/coordination step
Reviewer’s reason: Treasury, infrastructure bodies, departments and devolved governments; Project appraisal and sequencing
Four weightings
Normalised as 10 × weighted sum ÷ sum of weights, on a 0–30 scale. Where a criterion is not yet assessed, the range is the lowest and highest result if it were later scored 0 or 3 — not a score, a confidence interval or a rank.
- Equal weights: Range if completed: 15.0–21.0 out of 30. Not yet assessed: expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
- Evidence doubled: Range if completed: 14.5–20.0 out of 30. Not yet assessed: expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
- Scale doubled: Range if completed: 16.4–21.8 out of 30. Not yet assessed: expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
- Cost ignored (the funding gate still applies): Range if completed: 16.7–20.0 out of 30. Not yet assessed: expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
Funding gate: Not passed — the cost is not yet assessed or no allocation is committed for this scope. Ignoring cost in a weighting never removes the gate.
Delivery risk and gate
Delivery risk shown: AmberReview’s claim: Amber. Best the recorded evidence allows: Amber.
Review’s reason: Project lifetime costs, optimism bias, maintenance, financing and the coordination team. The headline strategy is an overlapping envelope.
Why it is not Green yet
- Scope (population, place and increment) not verified against the delivery baseline.
- No verified owner with the powers in place.
- Delivery capacity not verified.
- Lifetime incremental costs not complete.
- No credible funding (a committed allocation for the scope).
- Safeguards not specified.
- Monitoring lacks a metric, a data source or a baseline.
Green needs verified scope, a verified owner with the powers, verified capacity, complete lifetime costs with credible funding, specified safeguards and monitoring with a metric, source and baseline. Amber means appraisal gaps remain; Red means a material delivery obstacle. Red does not mean unimportant.
Gate: Pending — appraisal incomplete (review label: “Pending: incomplete appraisal”).
Why: Scores incomplete; Funding gate not passed (cost unknown or no credible funding).
The gate is separate from national list membership: being listed does not make an option eligible, and an eligible option need not be listed.
Cost and funding
Lifetime costing: Partial — some lines costed, no whole-life total. Review: “Full incremental costing not established in reviewed material”.
- 10 Year Infrastructure Strategy: government infrastructure funding (programme envelope) (published programme envelope; C-10YIS-ENVELOPE)
- Project capital, maintenance, financing and workforce costs for pipeline projects (not costed; C-A03-PROJECTS)
Still to cost: Project lifetime costs, optimism bias, maintenance, financing and the coordination team. The headline strategy is an overlapping envelope.
Funding status: programme route, not allocated.
Owner, powers and capacity
Proposed owner: Treasury, infrastructure bodies, departments and devolved governments (proposed, unverified).
Powers: needs a decision or allocation. Capacity: binding constraint.
Powers and capacity read from the review’s Rd and Ca anchors; no proposed owner has agreed to act (the review: “Proposed owners have not agreed to act”).
- England:
- HM Treasury and NISTA, with spending departments, devolved governments and local delivery bodies (action record)
- Scotland:
- HM Treasury and NISTA, with spending departments, devolved governments and local delivery bodies (action record)
- Wales:
- HM Treasury and NISTA, with spending departments, devolved governments and local delivery bodies (action record)
- Northern Ireland:
- HM Treasury and NISTA, with spending departments, devolved governments and local delivery bodies (action record)
The Infrastructure Pipeline covers UK government projects plus regulated sectors and mayoral authorities; devolved governments run their own capital programmes, not assessed here.
Dependencies, safeguards and risks
Depends on: None recorded.
Safeguards
- protect maintenance (proposed, not yet specified)
Risks and residual harms: Double-counting housing/grid benefits; shared workforce bottlenecks.
Monitoring and measured results
Metric: Milestones, outturn cost and service outcomes for selected projects.
Data source: Not yet named. Baseline: Not yet established.
Measures already on the domain page
- Total investment (gross fixed capital formation): latest 18.7% (2024); baseline 18.2% (2000) (United Kingdom).
- Business investment: latest 10.9% (2026 Q2); baseline not published (United Kingdom).
A page measure is not necessarily the review’s metric; linking the two is an editorial decision still to be made.
Evidence for the outcome
Outcome: Milestones, outturn cost and service outcomes for selected projects.
Macro modelling and delivery audits support the rationale; they do not evaluate the incremental publication or coordination change.
Effect records for this action
- Potential output: size not established (modelled, limited confidence; United Kingdom)
SWOT points it addresses
- Total investment was 18.7% of GDP in 2024, the lowest in the G7 (the other six had a median of 21.8%); the UK was lowest in 23 of the 33 years since 1992. (Growth & productivity)
- A ten-year infrastructure plan is in place: at least £725bn of government funding over the decade and an online pipeline of projects with their funding status, updated at least every six months. (Growth & productivity)
- Public net investment is forecast at 2.5–2.8% of GDP to 2030–31, well above its post-2010 low of 1.5% in 2013–14. (Growth & productivity)
- Using pipeline data to sequence projects against the workforce, grid and planning capacity they share could turn committed funding into completed assets sooner. (Growth & productivity)
Review record
Assessment status: Provisional single-reviewer assessment; not an approved business case.
Reviewer: Original assessment author (name not supplied). Reviewed: 6 October 2026.
Scored in the working review of 6 October 2026 on the shared ten-criterion scale (one reviewer); not independently calibrated.
First 90 days (review): Produce a signed scope and current-delivery baseline; Distinguish funded projects from aspirations; sequence resources; name owners and independent assurance; protect maintenance. Obtain incremental costs and an accountable decision before expansion.
Decision route: Project appraisal and sequencing
An earlier assessment exists on the 4 October 2026 selection table (nine H/M/L bands; superseded 7 October 2026). Its bands are kept, not converted into these scores.
An editorial screening framework by one reviewer, not a formal appraisal or business case. Proposed owners have not agreed to act.