Marentis Labs

Our Foundation

The Firm Built for Challenge

A governance firm that stress-tests the frameworks others accept at face value. Strategic Governance as a Service, principal-led and adversarial by design.

Our Philosophy

Marentis Labs exists to close a gap the governance industry has spent two decades widening. Organisations have never spent more on governance, yet severe failures continue at the same rate. Our white paper sets out the full evidence and traces the pattern to its source. The conclusion holds across sectors, jurisdictions, and regulatory regimes. Governance fails because the assumptions beneath the strategy go unchallenged until the consequences arrive.

The research identifies three structural defects in how boards are governed. Oversight arrives episodically, in scheduled meetings that miss the moments where strategy actually turns. Decision-making rewards consensus, which quietly suppresses the dissent a board most needs to hear. And challenge survives only where an individual chooses courage, because the system itself requires it of no one. Marentis Labs corrects all three. We install challenge as a permanent function, active between board cycles and built to surface what consensus conceals.

This is Strategic Governance as a Service. We act as a continuous, adversarial challenge function for the board, stress-testing every framework, examining every assumption, and pressure-testing every control before a regulator, an acquirer, or a crisis does it first. A board that has been genuinely challenged is a board far harder to surprise, to deceive, and to catch unprepared.

Principal-Led Delivery

The team that pitches is the team that delivers. Direct, undiluted access to senior expertise, with no handoff to junior consultants.

No Overhead. All Expertise.

A lean structure means client fees fund expertise directly. No associates. No project teams. No overhead layer between the client and the principal.

Marentis Labs Research

The Architecture of Governance Failure

Ninety pages of practitioner research on why governance spending keeps rising while failures persist, and the structural response that closes the gap.

The Founder

Owen Vallis

Owen Vallis

Managing Director & Founder

Marentis Labs Ltd

Strategic Risk Executive

Financial Services Group Chief Risk Officer & Independent Non-Executive Director

Owen Vallis brings two decades of senior institutional governance and strategic risk management to the work of stress-testing corporate strategy and investment decisions. He built that perspective at the centre of Tier 1 global finance, across Credit Suisse, J.P. Morgan, and Morgan Stanley. As the first Group Chief Risk Officer for SICO Bank, he built the holistic risk management function from inception and reported directly to the Board.

Direct board experience sharpens that institutional depth. Owen has served as a Non-Executive Director on the Audit and Risk Committee of a government statutory body reporting to Parliament, and as Chairman of Active Prospects, where revenue tripled during his tenure.

Owen has sat on both sides of the boardroom table, accountable to a board as a senior executive and providing oversight as a non-executive director. That dual vantage gives him the instinct to locate the flawed assumptions and hidden vulnerabilities that quietly undermine performance.

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Career & Board Experience

Credit Suisse
JP Morgan
Morgan Stanley
SICO Bank
Active Prospects
The Children's Commissioner
EdAct Trust
Credit Suisse
JP Morgan
Morgan Stanley
SICO Bank
Active Prospects
The Children's Commissioner
EdAct Trust

Owen Vallis · Founder & Principal

CRO Experience
Credit Suisse
Head of Fiduciary Risk, UK · £50bn+ AUM · FCA engagement
J.P. Morgan
VP Client Risk Management · $245bn institutional migration
SICO Bank Group
Group Chief Risk Officer · $6bn AUM · Basel III implementation
Morgan Stanley
Advisory role · Risk & governance
Active Board Positions
Active Prospects
Chairman · revenue grew 3.4x over 5 years · £6.5m to £22m+
EdAct Trust
Non-Executive Director · Educational governance
Past Board Positions
Children's Commissioner
NED, Audit & Risk Committee · Statutory body · 2016–2020
Regulatory Scope
FCA PRA FINMA CSSF CBB SCA NAO CMA BaFIN
Tenure
20+ Years
CRO practice across Tier 1 global institutions
£50bn+
AUM under direct governance oversight
An experienced advisor simultaneously active as a board principal and practising CRO.
Why Marentis Labs
"Big 4 firms provide governance through project teams. We provide it through the principal. That distinction matters when a regulatory examiner walks into your boardroom."
Most boards weigh two options when they need governance counsel. One is the expensive full-time hire. The other is the generic Big 4 engagement delivered through rotating project teams. Marentis Labs offers a third. Continuous, hands-on governance counsel from a principal who has sat on both sides of the table, as Group Chief Risk Officer and as board Chair. That combination is rare across the market. At Marentis Labs, it is the standard.

Executive Career

SICO Bank

Group Chief Risk Officer

First Group CRO across a $6bn AUM institution spanning three jurisdictions. Led Risk Framework overhaul, regulatory capital strategy, and board-level risk governance from inception.

Credit Suisse

Head of Fiduciary Risk, UK

Governance and risk oversight of £50bn+ AUM across equities, fixed income, multi-asset, CLO funds, Infrastructure funds and real estate. Regulatory engagement on fund governance, capital management strategies and fiduciary risk requirements.

JP Morgan

Vice President, Asset Management Risk Management

Risk architecture for a $245bn institutional client platform migration. Institutional clients across all asset classes. Delivered without material client loss or regulatory incident.

Morgan Stanley

Advisory Role

Early-career experience in advisory roles across risk and governance, establishing patterns of regulatory engagement and complex institutional problem-solving.

Board & Governance Experience

Active Prospects

Chairman

Chaired the board through a 3.4x revenue turnaround over five years, from £6.5m to £22m+. Restructured the committee architecture, professionalised board governance, and established oversight practice now ranked among the sector's top tier. Number 8 in the Great Place to Work 2026 rankings for large organisations (greatplacetowork.co.uk)

Children's Commissioner

Non-Executive Advisor, Audit & Risk Committee

Served 2016–2020 as NED on the Audit and Risk Committee of a statutory body reporting to Parliament. Governance guidance on audit, risk, internal controls, and parliamentary oversight expectations.

EdAct Trust

Non-Executive Director - Trust Member

Governance and strategic guidance across an educational trust managing multiple school settings.

Regulatory Experience

FCA

Financial Conduct Authority

PRA

Prudential Regulation Authority

NAO

National Audit Office

CBB

Central Bank of Bahrain

FINMA

Swiss Financial Market Supervisory Authority

CSSF

Commission de Surveillance du Secteur Financier, Luxembourg

CMA

Competition & Markets Authority, Saudi Arabia

SCA

Securities & Commodities Authority, United Arab Emirates

BaFIN

Federal Financial Supervisory Authority, Germany

Company Registration

Registered Address: 167–169 Great Portland Street, 5th Floor, London, W1W 5PF  |  United Kingdom Company Number: 16600357  |