Inclusive Sanitation in Practice (ISP) is a collaboration based on a long-term working relationship spanning different continents, jobs and roles. We started working together in 2006 as WSP-World Bank consultants, and subsequently continued as staff for about ten years, with a focus on urban sanitation. During this time we were instrumental in developing the SFD and an inclusive systems-based approach to urban sanitation. Since 2017 we have been undertaking a series of joint assignments on inclusive urban sanitation. ISP is based on a shared interest in providing practical engagement and building capacity in cities, countries, international development agencies and NGOs to extend cost effective hygienic urban sanitation services to all residents.