The language of sustainability has been absorbed so thoroughly into corporate communications that it has become almost impossible to use without scepticism. Every major company now has a net zero target, an ESG framework, and a sustainability report. Whether the commitments behind those documents reflect genuine strategic change or simply a new layer of disclosure requirements is a question that someone has to be in a position to answer. Dame Alison Rose spent her career as one of the people positioned to answer it, as explored here, and what she found over three decades of looking at businesses from a banker’s perspective was that the distinction between genuine sustainability and its performance is usually visible, to those who know where to look.
Rose joined NatWest as a graduate trainee in 1992 and spent the following thirty-one years working through the financial structures that underpin British commercial life. Her roles in leveraged finance, portfolio management, investment banking, and ultimately the chief executive position gave her a view of business sustainability that was necessarily concrete. A bank that extends credit to a business is making a judgment about whether that business will still be viable over the term of the loan. That judgment, repeated across millions of lending decisions, is one of the most practical forms of sustainability assessment that exists. It asks not whether a company has made a commitment but whether it has the operational and financial capacity to honour one.
What NatWest’s Climate Strategy Required
When Rose became Chief Executive in November 2019, she built NatWest’s climate strategy around a framework that required exactly this kind of assessment at scale. The bank committed to deploying £100 billion in green financing to support customers through sustainability transitions by the end of 2025. Reaching £48.6 billion against that target by mid-2023 required the bank to develop a genuine capacity to evaluate which businesses were making credible transitions and which were not. Rose has described the internal work that required: training 16,000 staff in climate and green finance skills through a programme developed with the University of Edinburgh, and building the analytical tools that could help customers understand their own climate exposure, including their carbon footprints and supply chain risks.
She has been specific about where she saw the most significant gap in the sustainable finance ecosystem: at the level of small and medium-sized enterprises. Large corporations have the resources to hire sustainability directors, commission emissions audits, and produce the kind of structured transition plans that allow banks to assess their progress. Most SMEs do not. Rose has argued that a climate transition strategy that only reaches the top tier of the economy is not a strategy for a climate transition. It is a strategy for the sustainability of a limited set of large businesses. Reaching the whole system required building tools and lending products that worked for businesses that lacked the internal capacity to navigate them alone.
Spotting the Real Thing
The framework of Dame Alison Rose on spotting sustainable businesses distinguishes between businesses that are adapting to sustainability requirements and businesses for which sustainability is a genuine competitive differentiator. The distinction matters to an investor or lender because it predicts different trajectories. A business that is adapting is managing compliance risk. A business that has built sustainability into its value proposition is pursuing market opportunity. The former is responding to external pressure. The latter is generating internal momentum. Under Rose’s leadership at NatWest, the bank’s entrepreneur accelerator programme supported a cohort in which more than a quarter of the businesses had sustainable activity as their core commercial offering, rather than as an add-on to an existing model. That proportion reflects where she believed the most durable opportunities lay.
At Charterhouse (see her Charterhouse role), where Rose joined as a Senior Partner in 2024 and sits on the Executive, Investment, and Portfolio Committees, that evaluative lens is applied to a portfolio spanning services, healthcare, specialised industrials, and consumer sectors, primarily across Europe. The judgment she brings to those conversations is the product of a career spent looking at what sustainable business performance actually requires, and how to distinguish it from the appearance of sustainability that the current reporting environment makes easy to maintain. In her view, the businesses most worth backing are the ones whose sustainability credentials survive scrutiny, not the ones that have learned to present them most persuasively.
Scaling What Works
Dame Alison Rose has also been a consistent voice on the question of how sustainable business models achieve scale. She has pointed to the Investing in Women Code as a model: a framework that began as a domestic initiative in the UK, attracted more than 250 institutional signatories, and has since been adapted for rollout across 28 countries through the Financial Alliance for Women and its partnership with the World Bank. The code worked because it was designed around a scalable mechanism rather than a one-off intervention. It created transparency, accountability, and a shared standard that institutions could adopt without requiring a bespoke process in each jurisdiction. Her view, further elaborated at damealisonrose.co.uk, is that sustainable business initiatives that cannot scale beyond their point of origin are useful demonstrations but not solutions. The challenge is always to build the infrastructure that allows what works in one place to work in many.
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