Whilst we have our second heat wave of 2026 and more to come for sure, its worth looking at tree cover in our respective boroughs and how the council is adding to it all. As trees are the best cover we can get on our streets from the sun, reducing temperatures by as much as 12C in the shade and effectively acting as AC units along our streets.
Now Westminster City Council directly manages approximately 9,000 street trees across the borough *, so l made an FOI request to find out how many trees the council has added to this stock during the 2020’s.
The figures show clearly it peaked in 2020/21 with just over 400 trees added to the streets of Westminster, from just under 250 trees in the previous year and it dropped down to these levels again soon after 2020/21. Less so if we also take away the trees removed as well. This certainly does not sound as though not enough is being done in response to the urgency of the matter.
We quite clearly need a much more concentrated effort in on this front, then has been forthcoming from the Council so far, as the best form of climate adaptation we can undertaken. Now can we get this from the new administration at City Hall at all at the beginning of their political term. Streets like the one l live on in residential parts of the City could do with trees planted along it, as we get use to several heat waves a year during the Spring and summer now.
However, looking at the total stock—which includes trees in the Royal Parks (like Hyde Park, Green Park, and St. James’s Park), private residential gardens, churchyards, and school grounds—the number is vastly higher.
The breakdown reveals the following distribution across the borough:
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Council-Managed Street Trees: ~9,000 trees lining the highways and residential streets (ranging from large London planes to smaller ornamental fruit trees).
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The Royal Parks: Tens of thousands of additional mature trees. For context, Hyde Park and Kensington Gardens alone host over 7,000 trees, while St. James’s Park and Green Park contain thousands more.
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Private & Other Public Land: Thousands of additional trees scattered across private estates, squares (like Berkeley or Belgrave Square), and institutional grounds.
While Westminster Council keeps a highly precise digital inventory of its 9,000 street trees for regular inspection and pruning, a comprehensive, single-digit count for every single tree on private and Royal property combined is not strictly tracked. Collectively, the total urban forest in the City of Westminster spans well over 20,000 to 30,000 trees.





