The Series A Playbook

The complete, evidence-based operating manual for turning warm intros into Series A term sheets — without losing a year to diligence that drags. Ten assets that work together: a 47-question diligence corpus, a 23-tab data room, the cohort analysis partners open first, and the timeline that sequences it all. Designed to be read in any order; sequenced for a 12-month preparation arc when read straight through.

Most Series A advice is positional, not operational. "Build a great deck." "Find a warm intro." "Tell a compelling story." All true; none of it gets a fund partner from "interesting" to "let's send a term sheet". The gap between those two states is filled with evidence — structured, defensible, instantly retrievable, and sequenced in a way that a two-hour partner meeting can underwrite without further discovery. This hub is the structured operating manual for that gap.

47 questions every tier-1 fund will run a Series A through — clustered against the Opagio 12
23 tabs the data-room structure institutional partners expect to open
10 assets curated from Pillar 1 — Series A Readiness — and the Valuation Lab
Key Takeaway: Partner meetings are a narrative exercise. Diligence is an evidence exercise. Founders lose Series As in the gap between them — not because the business is wrong, but because the artefacts that defend the business are not assembled and sequenced before the partner asks for them.

Who this hub is for

Founders and CEOs at £1M+ ARR

  • Six to twelve months from a Series A raise, or in a live process
  • Post-product-market-fit, with named institutional logos in the prior round
  • Building toward category-leadership or international expansion
  • Strongest fit for the institutional scale-up founder archetype

CFOs and Heads of Finance

  • Preparing the diligence pack for a Series A round
  • Owning the data room, the cohort tab, and the metrics tree
  • Forwardable across the senior team — every cluster is CFO-readable
  • The cross-pillar reference is the CFO Stack

Not sure where to start? Take the diagnostic — eight minutes against The Opagio 12, and the gap list tells you which cluster is most worth opening first.

What lives here — the architecture

The ten assets in this hub are not isolated articles. They are the components of a single artefact: a Series A operating manual. Each addresses a specific failure mode — the diligence drag, the cohort pushback, the lowball offer, the technical-DD surprise — that founders encounter under round pressure. The architecture maps to the way partners actually run a process.

The diligence corpus

Mirrors the question stack a tier-1 partner team builds during evaluation. The reference list founders forward to peers preparing the same round.

The data room

Mirrors the structure institutional partners expect to open. Twenty-three tabs built by a CFO who has raised four Series As.

The cohort analysis

Mirrors the single tab partners go to first when forming the multiple. Specificity beats summary.

The metrics, the deck, the timeline

Each is built to the partner's mental model — not the founder's preferred narrative arc. Together they form the operating manual.

Example: A founder at £2.4M ARR has a perfectly good business and a perfectly good narrative. Their Series A drags 91 days because the data room arrives in tranches, every question generates a new file, and the partner team cannot build the mental model fast enough to underwrite. The architecture in this hub is designed to compress that 91 days back toward the institutional median of 47.

The 10 assets

Each row below is a route on opag.io or a forward-reference to a product surface. The "Where it lives" column is the actionable destination; the "Why it matters" column is the partner-facing rationale.

#AssetWhere it livesWhy it matters
1The 47-Question Institutional Diligence Corpus/series-a-readiness/diligence-checklistThe reference list founders link to when preparing — and the artefact partners benchmark answers against
2Series A Data Room — the 23 tabs/series-a-readiness/data-roomThe structure institutional partners expect to open. Built by a CFO who has raised four Series As
3The cohort analysis partners open first/series-a-readiness/cohort-analysisThe single tab that closes or kills the round. Specificity beats summary
4Series A unit economics — the denominator problem/series-a-readiness/unit-economicsThe technical discipline behind LTV, CAC, payback and burn multiple at the institutional bar
5Series A valuation benchmarks by sector, 2024-25/series-a-readiness/valuation-benchmarksThe structured view of what your sector cleared at — and what the multiple cone looks like
6What metrics you actually need for a Series A/series-a-readiness/metrics-barThe institutional bar partners measure against — distinct from the seed-stage bar
7Why Series A rounds do not close (and the fixes)/series-a-readiness/rejection-reasonsThe structured failure-mode list, sequenced by frequency
8How to respond to a lowball term sheet/valuation/lowball-responseFrom the Valuation Lab. The five-step response sequence when a 40% under-ask lands
9Building the Series A board before the round/series-a-readiness/board-compositionThe governance architecture that signals readiness — and the failure modes that signal otherwise
10Series A timeline — T-12, T-6, T-3, T-0/series-a-readiness/timelineThe structured calendar — what to do twelve months out, six months out, three months out, and at close

The anchor asset

The 47-Question Institutional Diligence Corpus is the hub's primary destination — the single resource that earns links from operator communities and that founders forward to peers preparing the same round. It is structured as 47 questions clustered against the Opagio 12™ value drivers, with the answer artefact each question expects. Open. Free. No gate. Designed to be the reference link founders cite when their peers ask "what do investors actually ask?".

The corpus is the first asset to read in this hub. Run the Round Readiness Diagnostic first — eight minutes — to surface which of the 12 drivers are above and below sector median. Then open the corpus. The clusters where you score below median are the ones to populate first.

Related in Round Ready

Adjacent assets in Round Ready — read in any order.

CFO Stack

The cross-pillar surface for CFOs preparing the diligence pack — IAS 38, PPA, cohort discipline.

Open →

Round Ready

Not sure where to start?

Eight minutes against The Opagio 12. The diagnostic surfaces the drivers that sit above and below sector median, classifies your funded state, and routes you to the highest-relevance asset first.

Take the diagnostic →

Open the diligence corpus

Forty-seven questions. Twelve drivers. The reference artefact partners benchmark your answers against.