Featured Insights

SS 5/25: Approaches to managing climate related risks

The Prudential Regulation Authority (PRA) has published its final Policy Statement PS25/25 and SS 5/25 on climate-related financial risks on 3 December 2025.

We have broken down the Supervisory Statement into a set of 41 expectations that non-systemic banks will need to proportionately consider.

Basel 3.1 Implementation Guide

Katalysys recently hosted a roundtable in collaboration with UK Finance and representatives from the PRA, where we discussed the practical challenges firms are facing in preparing for implementation. Based on those discussions and our ongoing work supporting several institutions with Basel 3.1 readiness, we have produced a white paper focusing on the key areas of implementation that carry the greatest risk.

How Severe Should a Liquidity Stress Test Be?

Liquidity stress testing remains a cornerstone of effective risk management and regulatory compliance for banks. However, a persistent challenge lies in interpreting what constitutes a “severe but plausible” stress scenario, particularly in the context of evolving depositor behaviours and increasing digitalisation of banking.

This paper aims to address this challenge by examining how stress scenarios can be robustly calibrated using empirical evidence backed by statistical methods, with particular focus on liquidity stress testing informing the Internal Liquidity Adequacy Assessment Process (ILAAP).

Joshua Nowak 05/12/2025 Joshua Nowak 05/12/2025

Evolving Climate Risk Expectations for UK Banks (SS5/25 via PS25/25)

On 3 December 2025, the PRA published its final Policy Statement PS25/25 on climate-related financial risks. The final expectations now sit in Supervisory Statement SS5/25 ‘Enhancing banks’ and insurers’ approaches to managing climate-related risks’, which immediately replaces the old SS3/19. The changes enhance requirements in areas such as governance, risk management, scenario analysis, data, and disclosure.

Alvin Abraham 12/03/2024 Alvin Abraham 12/03/2024

Solvent exit planning for non-systemic banks (SS2/24)

PRA in the supervisory statement SS2/24 outlines requirements around solvent exit planning and execution. This article summarises the requirements and provides specific action points that small- and medium-sized banks can consider to implement these requirements.

Alvin Abraham 26/05/2023 Alvin Abraham 26/05/2023

Implementing Model Risk Management Principles (SS1/23)

PRA in the supervisory statement SS1/23 outlines the key principles that banks can use to embed model risk management (MRM) within the firm. This article explores practical steps that small- and medium-sized banks can take to implement these principles on a proportional basis.