In 2023, sustainability guidelines were updated in collaboration with the development teams. The guidelines apply to new developments and extension and renovation projects Group-wide. Requirements for all projects include zero waste to landfill for future operation, 100% of timber with FSC or PEFC certification for both works and the building itself, and divert demolition, strip-out and construction waste from landfill with at least a 70% waste recovery rate. Requirements for large projects include minimum environmental certification level, feasibility assessment of bio-sourced materials, long-term climate risks analysis, and integration of at least 2 circular economy 'concepts' from the Group's Circular Economy Framework.