The results for the Mayoral and Assembly elections down to constituency level are available (including turnout and spoils etc). Please note that due to boundary changes, 2016 ward data is not comparable with previous years' data.   More info on the 2016 elections can be found on the London Elects website.

The results for every constituency in the United Kingdom, including Greater London's 73 seats are available to download as an Excel file. The Greater Londoo Authority have produced a blog and and some interactive maps This data is published by the Electoral Commission.