The Challenge

A leading international humanitarian charity has a bold vision to become the UK’s first-choice charity for legacy giving.

In a crowded and transactional legacy landscape, this charity wanted to create emotionally resonant, brand-aligned propositions that could deepen supporter connection and unlock long-term commitment. They needed help turning their strategy into powerful, differentiated products that would move warm audiences closer to pledging.

The Solution

We designed and delivered a 10-week, insight-led sprint to develop three bold new propositions, each rooted in core emotional and behavioural motivations for legacy giving.

Our approach included:

  • Supporter conversations and co-creation with warm legacy handraisers.

  • A custom GPT assistant trained on the charity’s legacy strategy, audience insight and brand voice — helping accelerate idea generation and synthesis.

  • AI-powered ideation sessions that expanded the creative territory and enhanced early-stage concept development. 

  • An AI “Show & Tell” with the wider charity organisation. 

  • Rapid prototyping and creative expression of three distinct concepts. 


Each idea was designed to meet a different legacy motivation that explored supporter’s desire for more: storytelling, community, and longevity in legacy spaces.

The Impact

The charity now has three fully articulated legacy propositions, each with a distinct emotional hook, journey and ready-to-test creative assets and strategy.

The work has:

  • Brought internal alignment around what emotionally resonant legacy giving can look like.

  • Equipped the team with tangible tools to test and scale the ideas.

  • Sparked new ways of thinking about how to nurture long-term supporter relationships.

This project marks a shift in the charity’s approach, setting the foundation for long-term growth in a rapidly expanding legacy market.