The 2026 London Borough elections could deliver the largest change in council control since 2006.
Cavendish’s modelling shows Labour losing at least one in three councillors, control of 10 local authorities, resulting in a sharp rise in no overall control councils, fragile coalitions and new challengers on both the left and right.
The result will be a far more fragmented, unpredictable political landscape, with profound implications for decision making, planning and engagement across London. In this report, Cavendish set out:
Where control is most likely to change.
Which parties are gaining ground and why.
How a surge in no overall control councils will reshape power, priorities and delivery.
What this means in practice for organisations operating in the built environment.
Download the full report to understand what’s coming and how to prepare.
