We explored the relationship between board characteristics and sustainability of higher education institutions in the United Kingdom (UK). We analysed 153 UK universities using data for the year 2019. Our analysis revealed that board size, the number of students on the board, and the number of academic members on the board were found to have significant and positive relationships with sustainability. Also, the composition of the sustainability committee was shown to have a significant and positive impact on sustainability score. However, the relationships between board gender diversity, the number of external members on the board, and the number of board meetings held during the year with sustainability score were not significant. The results provide guidance to universities for developing their sustainability practices.