Regulatory Capital · Model Risk · AI Governance
A specialist advisory practice for globally active banks and asset managers navigating the divergence between UK, EU and US financial regulation.
About
LINXS Advisory works with globally active financial institutions on the three regulatory questions reshaping the balance sheet and the operating model: how capital is calibrated, how models are governed, and how AI is deployed under supervisory scrutiny.
Our clients are banks, asset managers and trading firms with footprints across the UK, EU and US — organisations for whom regulatory divergence is no longer a theoretical concern but a daily operating constraint. We help them calibrate group policy to the firmer of the applicable standards, evidence it to supervisors, and translate obligation into practical, defensible action.
How We Work
Senior-led. Every engagement is led and delivered by practitioners with first-hand experience inside G-SIBs and alongside the regulator — not junior teams supervised at a distance.
Independent. LINXS does not audit, does not sell technology, and does not take referral fees. Advice is the product.
Discreet. Client work is confidential by default. Case studies on this site are illustrative and anonymised.
Networked. The practice draws on a bench of senior associates — former regulators, model validators and capital specialists — assembled per engagement to fit the brief.
Leadership
LINXS Advisory was founded by Georgios Petropoulos, with over 25 years in capital markets — including 20 as a practitioner inside major banking groups and seven years in consulting, where he launched a market-recognised pricing and risk service and built senior industry partnerships. His focus today spans regulatory capital (Basel 3.1, FRTB), model risk (SS1/23, SR 11-7 and successor guidance) and AI governance across the UK, EU and US perimeters.
Practice Areas
Basel 3.1 and CRR3 implementation, output floor and standardised approach calibration, FRTB (SA and IMA) readiness, Pillar 2 and ICAAP, and the operating consequences of regulatory divergence across UK, EU and US. Independent model engines and pre-validation of standardised approach submissions.
PRA SS1/23 readiness and annual self-assessments, group-wide model risk frameworks for firms operating across US and UK perimeters, validation independence, model inventory and tiering, and board-level model risk governance. Section 166 readiness and remediation planning.
Governance frameworks for AI and generative AI in regulated financial services, EU AI Act Annex III conformity assessment, and drawing the line between the models MRM can validate under SS1/23 and the GenAI use cases that need their own governance. Alignment with evolving supervisory expectations in London, Brussels and Washington, with controls mapped once across six sources.
Insights
Ten questions, one AI system. See where the model risk framework holds for machine learning, where it stops for GenAI, and what has to replace it — with EU AI Act, Consumer Duty and UK GDPR touchpoints for your use case.
The EBA's market-risk benchmarking exercise is being rebuilt around the FRTB standardised approach — and from the 2027 exercise it extends to every institution on the ASA. How the validation portfolios work, what supervisors have already found, and how to test your implementation before they do.
Six sources govern AI in financial services: EU AI Act, ISO 42001, NIST AI RMF, SS1/23, SM&CR and UK GDPR. This briefing maps each to CRO actions, sets out the real burden of carrying all six — and explains why GenAI cannot simply be folded into model risk management.
On 17 April 2026 the US agencies rescinded SR 11-7 and replaced it with a principles-based, non-enforceable framework. The PRA has not moved on SS1/23. For globally active banks, the consolidated MRM framework now has to span the gap.
Capital, AI and model risk obligations across the UK, EU and US — every binding date between now and early 2028, in one filterable calendar. The planning view for Chief Risk Officers and group policy teams.
The UK's comprehensive cryptoasset regime is taking shape under FSMA, with the application gateway opening in September 2026 and the full regime commencing in October 2027. Here is what the framework looks like — and where firms need to act now.
Contact
Whether you have a defined brief or are still shaping your thinking, LINXS is happy to start with an open conversation. All initial discussions are confidential.