It’s been well over a decade now that I’ve been investing in growing businesses – and charities – tackling ingrained social and environmental challenges. I have some truly exciting companies in my portfolio, some of which have grown significantly in the last couple of years. It’s an honour to be part of their journey, and I am glad to offer my skills and experience when they need it (and sometimes when they think they don’t). But as an impact investor, I am very aware of the risks we run when we ask the entrepreneurs for too much, too early; it’s time to get real about the practicalities of impact measurement.