Actuarial and methodology support for s166 engagements.
The firm provides specialist actuarial input within s166 engagements — instructed by firms in scope to support their response, or by appointed skilled persons who need actuarial, calculation, and methodology input within their review. The firm is not itself an FCA-approved Skilled Person; it is engaged for the technical and methodology work that sits within the broader review.
The regime
Section 166 of the Financial Services and Markets Act 2000 gives the FCA and PRA the power to require an authorised firm to commission a skilled-person review at the firm's expense. The skilled person — appointed by the regulator (or by the firm with regulatory approval) — conducts an independent review in scope agreed with the regulator and produces a report. The report goes to the regulator; disclosure to the firm in scope is governed by the appointment terms.
S166 is the regulator's instrument where it has identified a substantive concern — methodology, governance, customer outcomes, control framework — and wants independent assessment before deciding what action to take. Skilled-person reviews are the apparatus through which serious regulatory enquiries become substantive technical engagement.
S166 reviews require methodology depth, calculation rigour, and a defensible audit trail — the same operational disciplines the firm builds into every productised engagement. Within s166 contexts, the firm is engaged to supply that technical apparatus, not to act as the appointed skilled person.
Two routes into the firm’s s166 work
The firm’s specialisms within s166 work
How an engagement runs
Why instruct the firm for s166 work
S166 engagements benefit from methodology sophistication, calculation rigour, and a defensible audit trail. The firm’s well-tested methodology supplies the technical apparatus for methodology defence and methodology assessment. The Congruent Calculations™ platform supplies calculation-by-calculation reproduction, sample reproducibility, and audit-grade documentation. Each output is a Check My Calculation™ artefact with a unique calculation control ID — engagement-grade evidence for s166 review purposes.
The firm’s structural independence from product providers, claims-management firms, and regulated counterparties supports its credibility as a specialist sub-instruction within s166 contexts. The firm’s Congruent Quality Framework, FCA authorisation, and professional indemnity arrangements support the engagement’s contractual and operational integrity. None of these substitute for the appointed skilled person’s role; they support the firm’s technical contribution within it.
For methodology-defence work in regulatory enquiries (where the firm represents the firm-in-scope rather than acting as skilled person), see Regulatory engagement. For expert-witness work in disputes, see Expert witness.
Scoped per s166 engagement.
Skilled-person-instructed
Where the firm acts under instruction from the appointed skilled person on a specific technical scope (calculation review, methodology challenge, sample-checking), scope and fee agreed at scoping. Engagement letter sets out timing, named individuals, and deliverable form.
Firm-instructed (under-review firm)
Where the firm in scope of the s166 instructs Congruent for technical support in responding to the skilled person's work, engagement is structured to the matter. Scope agreed at first conversation; engagement letter before work begins.
Statement of Work — how the fee is fixed
Engagements are scoped through a first conversation and then fixed in writing before any work begins. The firm’s Invitation Letter contains a Statement of Work fixing: the scope of the engagement, the timetable for delivery (key milestones and final-deliverable date), the price (with any stage payments scheduled against milestones), and the named individuals on both sides.
The scope-to-price conversion is based on the firm’s published charge-out rate: £350 per hour for engagements led by a Director or Senior Actuary (the only grades that lead engagements at Congruent). The Statement of Work converts scoped hours into a fixed fee — the buyer’s commercial commitment is to the fee in the Statement of Work, not to an open-ended hourly meter.
The firm tends to come in competitively on the fixed quote. Because Directors lead engagements directly — without the layered team structure typical of larger firms — scoped hours convert into a fixed fee that compares favourably against equivalent senior-led work elsewhere in the market.
Rate as at 1 January 2026, reviewed annually.
The methodological position behind the engagement.
For broader regulatory engagement work outside s166, see Regulatory engagement. For methodology challenges that reach tribunal or court, see Expert witness.
Whether instructed by the firm in scope or by the appointed skilled person.
If a regulated firm in scope of an s.166 notice needs specialist actuarial support to respond, or if an appointed skilled person needs actuarial input within their broader review, please engage the firm directly. Conflict checks and capacity confirmations run within one working day.