Position paper
How AI is reshaping consulting delivery — and the operating model the firms that survive will adopt.
The foundational thesis behind Series-X. Why the senior-operator + agent-stack model wins for the underserved middle.
22 min read
Welcome to Series-X.ai
Get AI working inside your business in 90 days.
A named senior operator — ex-SVP, VP, GM or CEO — working inside your business for 90 days, backed by a configured AI agent stack. Fixed fee. Outcomes agreed before we start.
Senior operator·20+ years operating·AI agent stack·Fixed fee·90 days
01 / THE GAP
Three-quarters of businesses your size now use AI in some form. Only 14% have got it into the operations that actually matter. Here's why.
CTO
Head of IT
Tech Lead
No internal tech leadership
No CTO or Head of IT to lead a sustained AI programme.
You've heard enough about AI to feel behind.
You have no realistic way to act. That gap is the whole problem — and it's the one we close.
Big Four
£200k+
vs
Series-X
£45k+
No budget for Big Four
Six-figure consultancy fees don't justify themselves at your size.
Is this the right play?
...no reply
No senior advisor on call
No fractional CIO or strategist on the other end of the line.
14%
Have AI in the work that matters
Three in four use AI somewhere. Only one in seven where it counts.
90days
That's how long it takes us
One senior operator, an AI agent stack, fixed fee — installed in a quarter.
02 / WHY TOOLS AREN'T ENOUGH
Pre-built workflows lower the floor. They don't place a system inside your business.
ChatGPT, Claude, Gemini, Copilot — these are tools. Powerful ones. But someone still has to work out which of your processes to point them at, how to connect them to your data, how to adapt them to your voice, and how to make your team actually use them.
The businesses already getting value from AI had a senior person inside who knew how to do that. If you don't — and most £5–25m businesses don't — the tools sit alongside the work instead of inside it.
That senior person is what Series-X sells. The AI stack is their leverage — not the product.
03 / THE ENGAGEMENT
Four things make a Series-X engagement different.
No junior consultants. No vague timelines. No surprise invoices.
01
A senior human in the room.
Not a junior consultant. Not a chatbot. A named operator with 20+ years of relevant experience leads every engagement.
02
An AI agent stack does the heavy lifting.
Analysis, content, integration, automation — handled by configurable agents under the operator's direction. Speed and depth a small team alone couldn't match.
03
90 days. Fixed fee. Fixed scope.
No change orders. No expense passes. No surprise extensions.
04
Outcomes signed up front.
We name the success criteria before any work begins, and close out against them — not against effort.
04 / THE MODEL
A senior operator, in the room. AI doing the repeatable work behind them.
The client meets one person — an ex-SVP, VP, GM or CEO with twenty-plus years of commercial operating experience. They speak your language because they've run businesses like yours.
Behind them, a configured AI agent stack handles the specific parts of the work that compress months into days: workflow, integration, knowledge, content, monitoring. The agents never speak to the client. The operator directs them, reviews every output, and applies judgement to everything that matters.
Series-X Fractional
Senior operator
Workflow
Integration
Knowledge
Content
Monitoring
Big Four
Sends analysts supervised by a partner you see twice. Nine-plus months. £200k+.
Series-X
Sends the senior operator, augmented by the AI stack. Ninety days. Fixed fee. Same seniority every day.
05 / THE 90 DAYS
Three phases. One quarter. A working system at the end.
Weeks 1–3
Diagnosis
Discovery sessions, we map your workflow, and we draft and sign an engagement charter with measurable success criteria.
Weeks 4–10
Build
We configure and calibrate the agent stack against your real data and voice, integrate with your existing tools (CRM, email, ERP), and run it live with human review in weekly working sessions.
Weeks 11–13
Embed & handover
We measure against the charter, document outcomes, and hand over a working system with a runbook in your own voice.
06 / PRICING
Fixed fee. Named up front. No change orders.
Diagnostic
2 weeks · fixed fee
£8k
A short, senior-led diagnostic. Where AI actually fits. Credited in full against an Engagement.
Start with a diagnosticRecommended
Engagement
90 days · fixed fee
from £45k
The core Series-X install. One senior operator, one workflow, in production. Outcomes agreed before we start.
Book a discovery callProgramme
2–4 quarters · fixed fee
from £120k
Sequenced engagements under one charter, with the operator on standby between phases.
Talk about a programmeFull comparison, FAQ and what's included on the pricing page. Optional intelligence subscription after the engagement, from £2,500/month.
07 / IS THIS YOU?
We're picky about fit. It's how the model holds up.
This is for you if
- ✓You're owner-managed, £5–25m revenue, growing.
- ✓You have no CTO and no Head of IT.
- ✓You don't have a Big Four retainer.
- ✓You don't have a fractional CIO or CTO.
- ✓The owner is personally sponsoring the change.
This isn't for you if
- —You have internal tech leadership running an AI roadmap.
- —You already have McKinsey or Faculty on retainer.
- —You want headcount cut — we don't do that.
1
Named senior operator per engagement. Ex-SVP, VP, GM or CEO. No juniors, no bench-swap mid-project.
90
Days from charter to a working AI workflow running in your business, against outcomes we signed before we started.
0
Autonomous client-facing AI. Every output is reviewed by the operator before it lands. Where AI is involved, you always know.
08 / USE CASES
Productised workflows we install — not bespoke from scratch.
Each one is a named workflow with a baseline, a target, and a way to measure it on day 90. Drawn from the operations of the businesses we focus on.
09 / INDUSTRIES
The UK markets we know cold.
Scored across six criteria — willingness to pay, urgency, AI fit, fragmentation, referability and our access. Three anchor verticals lead.
08 / THINKING
What we're working through in public.
Field note
What 'AI-augmented' actually means inside a £15m business.
6 min
Argument
Why fixed-fee, fixed-scope is the only honest pricing for AI work.
5 min
NEXT STEP
A senior operator, inside your business in 90 days.
Not a chatbot rollout. Not a slide deck. An ex-SVP / VP / GM operator, augmented by AI, installing one workflow that actually runs. Thirty minutes to see if it fits.