
Designing for Inclusion: Embedding Vulnerability into Financial Services Proposition Design
When nearly half the population lives with a vulnerability characteristic, why are so many products and services still treating vulnerability as the exception rather than the norm?
The FCA’s Review of Treatment of Customers in Vulnerable Circumstances found that “firms are yet to make significant progress in product and services design” and that “firms should consider this as a focus area as they continue to embed the Consumer Duty”.
As well as an opportunity to improve compliance, inclusive product and service design leads to better outcomes for more customers, and opportunities for stronger commercial performance.
Our new report, “Embedding Vulnerability into Proposition Design” provides a practical framework for embedding inclusion into every stage of proposition development. This blog explores the key insights from the report, with a particular focus on the Proposition Design Maturity Framework, a strategic tool to help you make progress, engage stakeholders, and deliver good outcomes for more customers.
From Labels to Impact: A New Lens on Vulnerability
We all recognise the four drivers of vulnerability, which have been helpful to support firms in understanding who may or may not be in vulnerable circumstances. While these categories are useful, they can lead to a checkbox mentality where firms focus on identifying, counting and responding, rather than designing systems that prevent harm in the first place.
That’s why our report proposes an impact-first approach. Instead of asking who is vulnerable, we encourage firms to explore the Impacts, Triggers and Resulting Harms from products and journeys. The report includes six examples as a starting point, but the model is designed to grow with your understanding. For firms ready to take a different view on vulnerability, this is a practical route to move from reaction to prevention, designing out harm from the very start.
This shift in mindset can also reframe vulnerability as a design challenge – and opportunity – not a customer deficit. It encourages firms to build inclusive systems that work better for everyone, regardless of their circumstances.

The Proposition Lifecycle: Designing for Inclusion from the Start
The report outlines five key stages in the proposition lifecycle:
Each of the stages, and associated activities, are explored in more detail in the report. While these stages provide a practical roadmap, the real power lies in how firms mature their approach over time. That’s where the Proposition Design Maturity Framework comes in.
The Proposition Design Maturity Framework: A Roadmap for Progress
The Maturity Framework that we have developed helps firms assess where they are today and chart a path toward more inclusive, equitable proposition design. It’s not a linear checklist, but a flexible tool that supports continuous improvement across five levels of maturity:

An example from the maturity framework, showing the Awareness stage
Using the Framework for change
The Maturity Framework is more than a diagnostic tool, it’s a strategic enabler. It helps firms:
Importantly, the framework recognises that no firm is perfect. Most will be at different stages across different areas. What matters is the direction of travel, toward a culture that centres on customer outcomes and continuous improvement.
Designing for and with customers in vulnerable circumstances: A Competitive Advantage
Designing for vulnerability isn’t just about compliance, it’s about creating better products and better customer outcomes. Firms that lead in this space are not only meeting regulatory requirements; they’re setting new standards for what good looks like, and working towards a more equitable system for all customers.
By embedding inclusive design principles early and intentionally, financial services firms can future-proof their offerings, differentiate themselves in the market, and – most importantly – deliver fair, effective outcomes for all customers.
At Inclusive Outcomes, part of the Big Window Group, we help firms at every stage of maturity with a range of activities. Speak to us about:

