Almost drowned out by the noise over airport expansion, Sadiq Khan issued A City for All Londoners recently, the vision document that will underpin the mayor's strategies and in particular the London Plan – the city's spatial blueprint.

What then does this tell us about what we can expect from Sadiq's mayorality? The changes are subtle – many paragraphs would not look out of place in Boris Johnson's 2008 Planning for a Better London – but they do signal shifts in emphasis and focus.