Evidence trail · Resilience and sustainability

Protect defence sustainment and retention through risk appraisal

Delivery risk: RedFurther checks needed

Provisional single-reviewer desk assessment, 6 October 2026.

Scoring overview · equal weights

Range if completed: 11 to 20 out of 30 (equal weights). Not yet assessed: increment beyond baseline, expected incremental benefit, incremental affordability.

← Back to the planOn its topic page: Defence →

The golden thread for this option, step by step. A dashed step is missing — shown as a gap, never filled in. Provisional single-reviewer assessment; not an approved business case, and not government policy.

  1. Step 1: Topic headlineIn place

    Defence

    Britain’s regular forces are 28% smaller than in 2010. Real defence spending is 5% higher.

    Priority (proposed): Keep the Armed Forces ready and able to sustain operations against the threats Britain faces. What would change it →

  2. Step 2: Deep diveIn place

  3. Step 3: EvidencePartly in place

    Outcome: Appropriate readiness and retention assurance, with sensitive detail protected.

    Public audits establish concern; classified readiness prevents a reliable public effect estimate.

    This is a new scope of A26; the base action’s evidence is not carried over to it.

    8 October research follow-up · AI-assisted

    Public expenditure and equipment counts cannot establish readiness. Some required evidence must be reviewed through protected assurance.

    The proposed design, costing task and safeguards are in the assessment below. These sources do not make an incomplete appraisal complete.

  4. Step 4: Competing optionsIn place

    Funded now (current baseline)
    Not yet stated in the record.
    The change assessed
    Identify priority maintenance, stock and specialist-retention gaps through appropriately protected assurance.

    Other options assessed on Defence

    • Deliver what is already funded

      Delivery risk: AmberFurther checks needed

      Delivery efficiency

      Deliver what is already funded

      Owner: Contracting authorities and Cabinet Office. Cost: Commercial staff, data systems, legal work and transition costs; separately verify cashable savings..

      Assessment range and limitations

      Range if completed: 14 to 20 out of 30 (equal weights). Not yet assessed: expected incremental benefit, incremental affordability.

      Topic: Follow the money

    Alternatives already on record on the topic page: 23 under its SWOT points and 3 earlier options compared, not scored in the review. See them on Defence.

  5. Step 5: SWOT points it addressesIn place

  6. Step 6: The action and its assessmentIn place

    The action card on Defence: Fund military readiness before counting new announcements

    A26v2Delivery risk: RedGate: pending

    Protect defence sustainment and retention through risk appraisal

    A new scope of action A26 (A26v2); A26 itself is unchanged and nothing is inherited from it.

    Provisional single-reviewer desk assessment, 6 October 2026.

    Who and where
    Identify priority maintenance, stock and specialist-retention gaps through appropriately protected assurance. (from the 6 October review) Jurisdiction: not defined.
    Result so far
    Range if completed: 11.0–20.0 out of 30 (equal weights; not yet assessed: increment beyond baseline (Ad), expected incremental benefit (Bn), incremental affordability (Co))
    Funded now (baseline)
    Funded baseline not yet stated
    The change assessed (marginal)
    Identify priority maintenance, stock and specialist-retention gaps through appropriately protected assurance. (from the 6 October review)
    What the evidence supports—and the next decision

    Public expenditure and equipment counts cannot establish readiness. Some required evidence must be reviewed through protected assurance.

    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
    Identify a capability-specific maintenance, stock or specialist-retention gap against an agreed operational requirement.
    Test whether it works
    Availability, sustainment and trained-personnel retention against that requirement, with appropriately cleared independent challenge.
    Establish the cost
    Lifecycle equipment, spares, training, pay, infrastructure and supply-chain risk; compare alternatives and opportunity cost.
    Protect against harm
    Publish what can safely be scrutinised and record where classified evidence was reviewed; absence of public detail is not a zero benefit score.

    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 Protect defence sustainment and retention through risk appraisal: 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.

    1. Scale and severity (Sc)3 of 3 — Severe harm across a broad population

      Reviewer’s reason: Problem scale judged from the linked domain evidence; not a population estimate of those helped.

    2. Increment beyond baseline (Ad)Not yet assessed

      Reviewer’s reason: Identify priority maintenance, stock and specialist-retention gaps through appropriately protected assurance. Incremental gap requires verification.

    3. Confidence in the proposed action (Ev)1 of 3 — Indirect, mixed, modelled or weak causal support

      Reviewer’s reason: Public audits establish concern; classified readiness prevents a reliable public effect estimate.

    4. Expected incremental benefit (Bn)Not yet assessed

      Reviewer’s reason: Unknown: no sufficiently supported magnitude for this exact change.

    5. Residual harms (Hm)1 of 3 — Material harm/unresolved mitigation

      Reviewer’s reason: Opportunity cost to other capability; classified data cannot be fabricated to complete a public score.

    6. Incremental affordability (Co)Not yet assessed

      Reviewer’s reason: Unknown: the proposed increment has not been costed and matched to an approved affordable allocation in this review. Existing programme envelopes are not that allocation.

    7. Delivery capacity (Ca)1 of 3 — Binding scarce resource

      Reviewer’s reason: Low public evidence does not imply defence is unimportant or exempt from scrutiny.

    8. Distribution (Fa)2 of 3 — Mixed or broadly neutral with safeguards

      Reviewer’s reason: Distribution assessed against the target group and the burdens described here: Opportunity cost to other capability; classified data cannot be fabricated to complete a public score.

    9. Meaningful first outcome (Ti)1 of 3 — More than three but less than ten years

      Reviewer’s reason: Timing judgement concerns the first meaningful outcome in: Appropriate readiness and retention assurance, with sensitive detail protected. It does not imply all long-term benefits arrive then.

    10. Readiness (Rd)2 of 3 — Named commissioning/allocation/coordination step

      Reviewer’s reason: Require a costed sustainment assessment alongside procurement commitments; publish only safe aggregate assurance. Owner: MOD, Treasury and parliamentary scrutiny bodies.

    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: 11.0–20.0 out of 30. Not yet assessed: increment beyond baseline (Ad), expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
    • Evidence doubled: Range if completed: 10.9–19.1 out of 30. Not yet assessed: increment beyond baseline (Ad), expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
    • Scale doubled: Range if completed: 12.7–20.9 out of 30. Not yet assessed: increment beyond baseline (Ad), expected incremental benefit (Bn), incremental affordability (Co). Funding gate: not passed.
    • Cost ignored (the funding gate still applies): Range if completed: 12.2–18.9 out of 30. Not yet assessed: increment beyond baseline (Ad), 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: RedReview’s claim: Red. Best the recorded evidence allows: Red.

    Review’s reason: Opportunity cost to other capability; classified data cannot be fabricated to complete a public score. Low public evidence does not imply defence is unimportant or exempt from scrutiny.

    Why it is not Green yet

    • Delivery obstacle: Opportunity cost to other capability; classified data cannot be fabricated to complete a public score. Low public evidence does not imply defence is unimportant or exempt from scrutiny..
    • 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 cost, funding, scope and capacity 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: Not established.

    Still to cost: Incremental lifetime costs and funding not established. Low public evidence does not imply defence is unimportant or exempt from scrutiny.

    Funding status: not established in review.

    Owner, powers and capacity

    Proposed owner: MOD, Treasury and parliamentary scrutiny bodies. (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:
    not assessed
    Scotland:
    not assessed
    Wales:
    not assessed
    Northern Ireland:
    not assessed

    Not defined in the review.

    Dependencies, safeguards and risks

    Depends on: Low public evidence does not imply defence is unimportant or exempt from scrutiny.

    Safeguards

    • Identify priority maintenance, stock and specialist-retention gaps through appropriately protected assurance (proposed, not yet specified)

    Risks and residual harms: Opportunity cost to other capability; classified data cannot be fabricated to complete a public score.

    Monitoring and measured results

    Metric: Appropriate readiness and retention assurance, with sensitive detail protected.

    Data source: Not yet named. Baseline: Not yet established.

    Measures already on the domain page

    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

    Review record

    Assessment status: Provisional single-reviewer desk assessment, 6 October 2026.

    Reviewer: Original assessment author (name not supplied). Reviewed: 6 October 2026.

    Carried from the earlier domain review (C record): must be calibrated jointly with the G/W/E/NG/NW/NE records before any combined comparison.

    Decision route: Require a costed sustainment assessment alongside procurement commitments; publish only safe aggregate assurance.

    An editorial screening framework by one reviewer, not a formal appraisal or business case. Proposed owners have not agreed to act.

  7. Step 7: Measured resultsPartly in place

    Judged on: Appropriate readiness and retention assurance, with sensitive detail protected.

    Data source: not yet named. Baseline: not yet established.

    A page measure is not necessarily the option’s metric, and a measure moving is not proof that the option caused it.