We reflect on the sustainability of modelling infectious disease outbreaks from the perspective of modelling as a field of practice. We formed a community of practice among UK infectious disease modellers who had contributed to the UK COVID-19 response. We previously used a participatory workshop approach to highlight issues in the infrastructure and incentives for outbreak modelling, and synthesized our experience into a set of 12 specific recommendations. Here, we track changes in the field of infectious disease modelling 1 year later, collecting the quantitative and qualitative views of change among 14 participants. We found participants continued to highlight a lack of ongoing, sufficient or appropriate action to develop outbreak modelling capacity in the UK, while positively noting collaborations among public health facing institutions. We emphasize the under-prioritization of funding for outbreak modelling outside of emergency response periods, and the continuation of unsustainable working practices. Correcting this is crucial to supporting evidence-based public health policy for outbreak preparedness and response.