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UK Startups and Innovation
13MAY

Healey makes DIAG permanent, launches Sprint and Zig-Zag

3 min read
20:05UTC

The MOD now has a permanent private-capital channel, and two new mechanisms borrowed straight from the DARPA-plus-In-Q-Tel playbook.

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Key takeaway

DIAG's permanence gives UK defence startups their first durable private-capital channel into MOD procurement.

Defence Secretary John Healey and Chancellor Rachel Reeves made the Defence Investors' Advisory Group (DIAG) permanent on 22 April 2026, and launched two new mechanisms alongside it: Sprint, a private-investment leverage vehicle, and Zig-Zag, a private-finance secondment programme embedding venture professionals inside the Ministry of Defence (MoD). Cathal Deasy of Barclays and UK Government Investments co-chair the group; the target is the UK's next defence unicorn among startups with no prior MoD contracts.

DIAG began as an advisory group of private-market investors convened to tell MoD procurement how the venture market actually works. Its permanent status means the group now has a budget line, a secretariat, and formal convening power rather than quarterly meetings. Sprint gives it an instrument: leverage mechanisms that let private capital co-invest alongside MoD contracts at defined milestones. Zig-Zag closes a specific skills gap. MoD procurement has long lacked anyone who has personally led a Series A, and civil-service pay bands cannot compete with venture partner economics. Zig-Zag solves that by seconding private-sector finance professionals into the department for defined terms, at their private-sector compensation paid by their home employer.

The package advances the £20m MOD accelerated contracts fund from a project into a permanent institutional architecture. Structurally it is closer to the DARPA-plus-In-Q-Tel model the US runs than anything Britain has previously attempted in defence. DARPA funds moonshots at contract; In-Q-Tel takes equity stakes in dual-use startups. DIAG borrows from both, routing private-market expertise and private-capital co-investment through a single endorsed pipeline.

Defence-tech founders now face a new shortcut into MoD procurement. A DIAG endorsement signals that a named private-market professional has reviewed the company, and Sprint's leverage mechanism offers a pathway to commercial-scale contracts without going through the multi-year MoD tender cycle. Expect private capital to chase DIAG-endorsed names; expect the first Sprint-backed startup announcement to be the moment the thesis earns a commercial test.

Deep Analysis

In plain English

The Defence Investors' Advisory Group (DIAG) is a permanent body that the government has set up to connect military needs with private investment in defence technology startups. This week it got two new tools: Sprint (which tries to leverage private money into defence investments) and Zig-Zag (which embeds private-sector finance experts inside the Ministry of Defence so that MOD officials can better understand startup businesses). The goal is to find the next big British defence technology company among startups that have never previously worked with the military.

Deep Analysis
Root Causes

UK defence spending committed at 2.6% GDP from 2027 creates a structural increase in MOD procurement budgets that private investors can rationally anticipate as future revenue for defence-adjacent startups; the DIAG permanent institutional status signals that Healey and Reeves intend this to be a multi-Parliament programme rather than a single-term initiative, which materially reduces the policy-reversal risk that had previously deterred long-duration VC strategies in defence.

The £20m accelerated contracts fund , which required startups to have no prior MOD experience, revealed that the MOD's main barrier to dual-use startup adoption was not company readiness but the absence of a standardised fast-procurement pathway; DIAG's permanence is an attempt to institutionalise that fast pathway without requiring primary legislation.

What could happen next?
  • Consequence

    The first Zig-Zag secondee placed inside MOD will be identified and publicly named within 12 months; their seniority and sector background will signal whether Sprint is targeting cybersecurity and AI (which have existing dual-use markets) or novel hardware and autonomy (which require longer procurement cycles).

    Short term · 0.65
  • Risk

    Without a contractual procurement commitment from MOD to Sprint-endorsed companies, private investors will treat DIAG endorsement as a reputational signal rather than a revenue guarantee; this limits Sprint's ability to attract pension-fund capital, which requires contractual cash-flow certainty, and restricts the private finance pool to risk-tolerant VC rather than the broader institutional capital the programme targets.

    Medium term · 0.7
  • Opportunity

    Cosine, the SAIU AIRR compute recipient developing sovereign defence AI, is the most visible pre-commercial company at the intersection of SAIU and DIAG mandates; if DIAG names it as a Sprint target before year-end, the dual endorsement creates a precedent for cross-programme co-investment that could unlock the Nscale infrastructure (ID:2339) as a sovereign defence compute layer.

    Medium term · 0.45
Sources:CNBC
Mentions:Defence Investors' Advisory Group →John Healey →Rachel Reeves →Sprint →Zig-Zag →UK Ministry of Defence →Barclays →UK Government →Institute for Government →Lockheed Martin →Cathal Deasy →
First Reported In

Update #2 · Britain's innovation pipe leaks at both ends

CNBC· 22 Apr 2026
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Causes and effects
Caused by
MOD opens £20m fund to defence newcomers
The permanent DIAG with Sprint and Zig-Zag mechanisms advances the £20m MOD accelerated contracts fund (ID:2347) from a project into a permanent institutional architecture.
Occurred 1 Jan 2026
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This Event
Healey makes DIAG permanent, launches Sprint and Zig-Zag
The UK defence startup ecosystem gains its first permanent institutional architecture for private investment, advancing the £20m accelerated contracts fund from a project into a durable structure.
Led to
All3 lands $25m for agentic defence factories
Sprint and Zig-Zag provide private-finance mechanisms for defence startups; All3 targets the same defence, robotics and aerospace customer base.
Occurred 29 Apr 2026
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Innovate UK opens £3.5m cyber competition
Healey and Reeves made Sprint and Zig-Zag permanent on 22 April; Innovate UK Cyber Contracts extends the procurement-as-capital model to cybersecurity startups.
Occurred 29 Apr 2026
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National Wealth Fund writes first defence cheque
The NWF's Rowden cheque moved ahead of Sprint and Zig-Zag — the defence startup mechanisms Healey and Reeves launched on 22 April (ID:2704) — as the first sovereign defence-tech investment.
Occurred 13 May 2026
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Different Perspectives
Australian Department of Defence (AUKUS AI for Acoustics partner)
Australian Department of Defence (AUKUS AI for Acoustics partner)
Rowden Technologies holds active AUKUS AI for Acoustics contracts with the UK, US, and Australian defence establishments. The NWF's £25m investment in Rowden on 13 May brings UK sovereign capital directly into a trilateral programme, which from Canberra's perspective places additional UK government skin-in-the-game on a programme Australia co-funds and co-develops.
Sofinnova Partners (European VC co-investor in Cytospire Series A)
Sofinnova Partners (European VC co-investor in Cytospire Series A)
Sofinnova participated alongside the BBB in Cytospire's oversubscribed £61m Series A on 5 May, demonstrating that the BBB's expanded direct mandate is attracting established European specialist biotech funds rather than replacing them. European VCs see the BBB's cornerstone position as a signal reducing UK biotech execution risk rather than crowding out private capital.
Temasek (Singapore sovereign co-investor in Isomorphic Series B)
Temasek (Singapore sovereign co-investor in Isomorphic Series B)
Singapore's Temasek co-invested alongside the UK's SAIU in Isomorphic's $2.1bn round, treating the same Alphabet-majority company as an acceptable sovereign co-investment target. Temasek's participation normalises the structure: multiple sovereign wealth funds backed the same round, strengthening the precedent that UK-headquartered Alphabet subsidiaries qualify for state investment.
Alphabet / Google (majority Isomorphic shareholder, Mountain View)
Alphabet / Google (majority Isomorphic shareholder, Mountain View)
Alphabet co-invested via GV and CapitalG in the same Isomorphic Series B round that received UK sovereign backing, placing US corporate capital and UK public capital in the same syndicate without any governance asymmetry. SAIU's minority stake validates Isomorphic's strategic value without constraining Alphabet's control over IP, geography, or exit decisions.
DSIT / Liz Kendall, Secretary of State for Science
DSIT / Liz Kendall, Secretary of State for Science
DSIT framed the Isomorphic investment as backing a British-founded and headquartered company advancing UK AI capability, and described the nine-day sovereign deployment sprint as evidence the government's industrial strategy is operational. The department has not addressed the ownership question, the absence of eligibility criteria, or the pace-versus-doctrine tension in the BBB mandate.
Beauhurst / UK startup data analysts
Beauhurst / UK startup data analysts
Five sub-£50m rounds closed in nine days with zero VCT-backed angel networks on any cap table, confirming the post-cut investor map is forming fast in the £4m–£40m band. The gap is structural: 36.7% of university spinouts raised below £500,000 in 2025, a tier neither the SAIU nor the BBB direct mandate touches.