Ms Marion Jammet:

Measuring is critical. We are working with the Green Building Council in other countries, where we can see that, as soon as you start measuring, there is innovation in the industry. We have seen this from talking to our French colleagues. If people start measuring, it starts to have an impact on innovation, construction materials and reducing emissions.

We must push for more reusing. Otherwise, it will be very difficult to reach our targets if we are to build 400,000 homes by 2030. There must be a focus on reusing the existing stock.