The Instant Group have launched their "Sustainability Index". The linked press release (behind a soft paywall) notes that over 3k workspaces are already included on the index, including 30 UK properties from Landmark who is one of the founding partners.

I like this idea, having supported a number of eco-focussed certifications and ratings over the years, and am watching to see if it'll catch on. Now, because I know the Instant team read this... I do hope they take an open API approach to the results and rankings (if that's a tech challenge, I know some creative data integrators who could hop in to help. Just saying).