This paper provides knowledge and recommendations for the “best practice” use of information, communication, and collaboration technologies for stakeholder engagement in UK-based planning and environmental decision-making. Tackling complex environmental issues requires inclusive and participatory decision-making processes, however current frameworks overlook the impact of technology on achieving positive outcomes. We conduct a two-stage study (including a survey, N = 58; and semi-structured interviews, N = 38) to capture experts’ experiences of engagement during the Covid-19 pandemic. Results offer a snapshot into the use of participatory geo-information tools – highlighting key challenges and considerations for policymakers and practitioners.