Impact measurement, evaluation and data
Whether you’re a business, charity or funder, impact measurement and evaluation is all about helping you improve the good work you’re doing. Our Understanding Impact guide takes you through how to create an impact measurement framework. To dig deeper, we run regular training events, and our consultants can provide independent measurement and evaluation services.
Blog
Developing a theory of change is transforming our approach to impact measurement
By Laura Sims.
On 16 October 2025.
How St John has developed an organisation-wide theory of change to clarify its societal impact and the strategy to achieve it.
Resources
Culture Change: How to achieve and measure it
By Charlotte Lamb, and Emma Pearson .
On 8 October 2025.
This guide will layout a process to support you to define your own culture and measure it.
Blog
Impact reporting: 5 ways to turn principle into practice
By Sarah Broad, and Elliot Trevithick .
On 16 September 2025.
A new Charities Statement of Recommended Practice (SORP) is expected this autumn. During the SORP consultation we recommended signposting guidance. We don’t yet know if the SORP Committee will adopt our recommendations, but regardless we've lots of resources to support you on your impact journey.
Blog
Dabbledoo and NPC: Using data to illustrate the impact of arts education
By Shane McKenna.
On 12 September 2025.
Dabbledoo provides interactive resources to help educators bring the joy of the arts into their classrooms. But to prove our long-term impact and continually improve what we do, we partnered with NPC who gave us the tools and framework to become a truly data-driven organisation.
Organisation we’ve worked with
British Safety Council
On 7 August 2025.
NPC was commissioned to help British Safety Council develop a purpose roadmap that shows how their activities link to their overall purpose and support operationalising their strategy.
Blog
4 questions to ask when building an impact dashboard
By Kaan Yilmazturk, and Elliot Trevithick .
On 16 June 2025.
Where are you on your impact journey? What’s your main aim? How will you collect and manage the data? Who will maintain and update the dashboard?
Organisation we’ve worked with
Tommy’s
On 12 June 2025.
Tommy’s asked NPC to help them develop a measurement framework and a dashboard to collect data and track outcomes identified in their theory of change.
Event
Developing a measurement framework for your charity
On 9 September 2025, 10:30 am – 12:00 pm at Zoom
This online webinar is for charities who want to develop or update their measurement framework.
Event
Theory of change in ten steps
On 27 November 2025, 10:30 am – 12:00 pm at Zoom
This seminar will run through how to develop a theory of change, based on our guidance 'Theory of change in ten steps'.
Event
Survey design in the charity sector
On 20 November 2025, 10:30 am – 12:00 pm at Zoom
This Leading Impact webinar will be exploring survey methodologies and questionnaire design.
Blog
What do you do when your impact isn’t measurable?
By Elliot Trevithick .
On 27 May 2025.
Don’t let perfect be the enemy of good. Develop a compelling explanation of your impact. Measure what you can. Don’t prioritise measurement over the work.
Blog
Using impact strategy to make a bigger difference
By Erwin Hieltjes .
On 7 May 2025.
The world of impactful grant-making is full of challenges. How can you manage these tensions and trade-offs? A well thought-through impact strategy will help.
