Knife-edge council faces pivotal Trinity by-election
Control of Wandsworth Council is back in the balance after Labour councillor Lizzy Dobres resigned her Trinity ward seat, forcing a by-election that could determine who runs the borough for the remainder of the term. The Conservatives currently lead a minority administration with support from Independent councillor Malcolm Grimston under a confidence-and-supply arrangement. If they capture Trinity in the forthcoming contest, the party would move from 29 seats to a working majority of two.
Dobres, who had served for four years, is stepping down after accepting a politically restricted job. Her departure immediately creates a vacancy in the two-member Trinity ward and sets up a high-stakes local poll in the coming weeks. The outcome will determine whether the Conservatives continue to rely on an external deal to pass key votes—or govern outright with a majority in the chamber.
“Serving as a councillor for Trinity has been one of the greatest privileges of my life, and stepping down is not a decision I ever wanted to make... I have accepted a politically restricted role. That means I can’t serve as a councillor while working in this job.”
Arithmetic that could end confidence-and-supply
The council’s current composition reflects a closely divided borough. Following the most recent local elections, the Conservatives hold 29 seats and Labour 28, with a majority threshold at 30. To govern, the Conservatives struck a deal with Independent Cllr Malcolm Grimston to back them on essentials such as the budget and votes of confidence.
| Group | Seats now | Majority needed |
|---|---|---|
| Conservatives | 29 | 30 |
| Labour | 28 | |
| Independent | 1 (confidence-and-supply) |
The Trinity ward is finely balanced. In May’s local poll, Labour lost one of the two seats there when former councillor Jack Mayorcas fell to Conservative Kirsten Botting by a margin of 64 votes, while Dobres retained her place with a majority of 195. Those razor-thin figures underline why party organisers on both sides are expected to mount intensive ground operations once the by-election date is confirmed.
What a switch would mean for residents
A Conservative gain in Trinity would lift the party above the majority line and remove the need to rely on an Independent to pass the budget and other foundational decisions. Conversely, if Labour defend the seat, the existing minority arrangement would continue, leaving high-profile decisions—on spending, council tax, local services and strategic plans—to be negotiated under the current confidence-and-supply framework.
- Budget-setting and council tax: A majority administration could pass financial plans without external backing; a minority would still require the Independent member’s support on the annual budget.
- Service delivery: Control of committees and agenda-setting would be more straightforward with a majority, potentially accelerating decisions on local priorities.
- Stability: A decisive result would reduce the risk of procedural deadlock on key votes.
Next steps and timeline
The by-election for the vacant Trinity seat will be scheduled in the coming weeks. Until then, the Conservatives continue to administer the council as a minority, supported on crucial divisions by Cllr Grimston. Campaigning is likely to focus on hyper-local concerns in Trinity, where recent results indicate that only a small number of votes could settle control of the borough for the rest of the term.
