Pricing

Fixed fees.
Measurable returns.

No day rates. No retainer ambiguity. Every engagement is priced to make the financial case obvious — because it is.

£3,500
Diagnostic from
37×
Average Year 1 ROI
100%
Diagnostic fee credited

The buying path

One day to start. Monthly from there.

Most clients book a Diagnostic in the morning, see their AI estate by afternoon, and move to a monthly governance programme within two weeks.

Step 1
Discovery call
Free
30 minutes. Understand your situation and whether Sentinel is the right fit.
Step 2
Sentinel Diagnostic
£3,500 – £5,000
One day. Preliminary risk score, top findings, automation shortlist. Fee credited on upgrade.
Step 3 — Most popular
Sentinel Engagement
£18k – £28k
12 days fixed. Complete programme, board delivery, Citadel go-live. Diagnostic fee credited.
Step 4
Citadel subscription
From £1,000/mo
Continuous governance. Monthly board scorecards. Billed annually after Sentinel.

Prefer to spread the cost? The full Sentinel + Citadel programme is available from £2,917/month billed annually. Discuss monthly billing →

Engagement tiers

Full detail on what's included.

T0 — Entry point

Sentinel Diagnostic

£3,500 – £5,000

One-time · credited in full on upgrade

A structured single-day session. AutoDiscover configured 48 hours before arrival. By end of day you have a risk score, your top AI risks identified, and an automation opportunity shortlist.

  • AutoDiscover pre-scan (read-only)
  • Preliminary risk score
  • Top 3 automation opportunities with ROI estimate
  • Diagnostic Report delivered same day
  • Full fee credited on upgrade to T1 or T2
Book Diagnostic →
T2 — Full programme

Sentinel + Citadel

£2,917/mo

From · billed annually (£35k–£60k) · Engagement + 12 months Citadel

The complete Sentinel Engagement plus 12 months of live Citadel governance. Monthly board scorecards, continuous monitoring, annual re-score included.

  • Everything in Sentinel Engagement
  • 12 months Citadel subscription
  • Monthly auto-generated board scorecard
  • Continuous AutoDiscover monitoring
  • Compliance tracker (EU AI Act, ISO 42001)
  • Annual re-score included
  • Quarterly governance review calls
Discuss programme →
T3 — Ongoing governance

Citadel Platform

£1,000 – £2,000

Per month · billed annually (£12k–£24k) · scaled by estate size

For post-Sentinel clients renewing continuous governance, or clients who completed an engagement with a partner firm. Keeps your board scorecard live.

  • Citadel Client Intelligence Portal — all 5 views
  • AutoDiscover continuous monitoring (weekly)
  • Monthly auto-generated Board AI Scorecard
  • 12 monthly evaluation runs for Tier 1/2 systems
  • 4 quarterly check-in calls with EAIC consultant
Discuss subscription →

Add-ons

Extend your engagement.

Available as additions to any Diagnostic or Engagement.

Regulated sectors

Sector Vertical Pack

+£500–£3,000 on Diagnostic or Engagement

Modified risk scoring, sector-specific regulatory mapping, and specialist board sections. Available for Financial Services, Healthcare (CQC), and Legal (SRA).

Certification

ISO 42001 Track

+£5,000–£8,000 add-on to T1 or T2

Gap register, evidence bundle, certification body introduction (BSI / Lloyd's Register), and 3 months of ISO 42001 advisory support.

Common questions

Pricing FAQs.

What is the minimum commitment?

The Sentinel Diagnostic at £3,500–£5,000. One day, no further obligation. The Diagnostic fee is credited in full against any subsequent engagement.

What does the Diagnostic fee credit mean?

You're not paying £3,500 and then £25,000. You're paying £25,000 total — with £3,500 of that banked upfront from a day that proves the value before you commit.

How does monthly billing work?

The T2 programme (Sentinel Engagement + 12 months Citadel) is billed annually at £35k–£60k, which we present as £2,917–£5,000/month to make budget conversations easier. We can discuss staged payment arrangements for qualifying clients.

Is the ROI figure guaranteed?

No. The 37× average ROI figure is based on completed engagements. Individual results depend on estate complexity. We do not guarantee specific financial outcomes — but we do guarantee the quality and completeness of the methodology.

Are multi-year Citadel subscriptions discounted?

Yes. Two-year subscriptions receive 10% off. Three-year subscriptions receive 15% off. Multi-entity or group subscriptions are priced individually.

What is included in the Sector Vertical Pack?

Modified risk scoring, sector-specific regulatory mapping (FCA Consumer Duty, CQC, SRA), and specialist board sections. Available for Financial Services, Healthcare, and Legal at +£500 on Diagnostic, +£1,500–£3,000 on Engagement.

Find out what AI is
really costing you.

A Sentinel Diagnostic takes one day and starts at £3,500. Most clients find more than 100× that figure in risk exposure and automation opportunity. The fee is credited in full if you proceed.

Fixed fee · No day-rate surprises · No commitment beyond the Diagnostic