R-01
Logic & formula integrity
Full dependency tracing, hard-code detection, error-prone construction patterns, and spot recalculation of key outputs from source.
Model Assurance Review
Know exactly what your model is telling the board — and whether to trust it.
An independent, fixed-fee review of one business-critical financial model. We test the logic, structure and reconciliations a questionnaire can't reach, and hand you a written findings report with a prioritised remediation plan.
Book a scoping callFormatOne model, reviewed independently
Duration10 working days
FeeFixed — from £4,500
OutputWritten findings report
Follow-upWalkthrough call included
Scope
What gets tested
The same five dimensions as our free health check — but inside the file, not by questionnaire.
R-02
Structure & architecture
Input/calculation/output separation, consistency of layout and direction, and the structural risks that make future errors likely.
R-03
Reconciliation & controls
Do outputs tie back to the trial balance, ledger or prior model? Are checks present, complete, and visible enough to be trusted?
R-04
Documentation & key-person risk
Assumptions register, change history, and whether the model could survive the departure of the person who built it.
Process
Ten working days, four stages
Minimal demand on your team: one scoping call, secure file handover, and one walkthrough at the end.
Days 1–2 · Scope
Scoping & handover
We agree the model's purpose, the decisions it feeds, and receive the file with any source data needed for reconciliation.
Days 3–7 · Test
Independent testing
Structured review across all four dimensions, logged as evidenced findings — not impressions.
Days 8–9 · Report
Findings & remediation plan
Each finding rated by severity, with a specific, sequenced fix — quick wins separated from structural work.
Day 10 · Walkthrough
Review call
We walk your team through the findings and answer the questions the report raises. The report is yours to share internally.
Deliverables
What you receive
- Findings report — every issue evidenced, severity-rated and explained in plain language the board can read.
- Remediation plan — sequenced fixes with effort estimates, separating same-day corrections from structural rebuild decisions.
- Risk rating — an overall assurance opinion across the five dimensions, comparable if you re-review after remediation.
- Walkthrough call — one hour with the reviewer, your team invited.
Questions
Before you ask
Is our data safe?
Files are exchanged over a secure channel you approve, held only for the duration of the review, and deleted on completion. We're happy to sign your NDA before anything is shared.
What counts as "one model"?
One workbook (or one tightly linked set) serving a single purpose — a forecast, a consolidation, a pricing model. If yours sprawls wider, the scoping call settles the boundary before the fee is confirmed.
Will you fix what you find?
The review is deliberately independent — we report, you decide. If you want the remediation delivered, that's a separate engagement, quoted from the plan you'll already be holding.
Why "from" £4,500?
Most single-workbook reviews sit at the base fee of £4,500. Multi-entity consolidations and models with heavy source-data reconciliation take longer; the fixed fee is confirmed at scoping, before any work starts, and doesn't move after that.
Next step
Start with the model your board relies on
Send a line about the model and the decision it feeds. We'll come back within one working day with scoping questions and a confirmed fee. Not sure yet? The free 3-minute health check is the place to start.
hello@repologic.uk