The Liberal Democrats wrote to Prime Minister Andy Burnham on 17 August 2026 requesting a cross‑party summit on the United Kingdom’s climate‑change response to the forecast ‘super El Niño’, and, according to a Guardian report published on 31 August 2026, have not received any reply from the prime minister or other party leaders.

Why the timing matters

Weather scientists have warned that a rare “super El Niño” is likely to hit the UK this autumn, intensifying floods and storms. The phenomenon, characterised by unusually warm sea‑surface temperatures in the central Pacific, can drive extreme rainfall and wind across Europe. In the United Kingdom, the Met Office has highlighted the risk of higher river levels and coastal erosion as the system develops.

Against that backdrop, the Liberal Democrats framed their letter as a call for coordinated political action. In the letter, spokesperson Pippa Heylings and party leader Ed Davey proposed a meeting of the nation’s party leaders “to discuss the long‑term measures needed to protect our country from climate impacts and build resilience to the extreme weather we are already experiencing”. The request was made two weeks before the Guardian’s 31 August story, which notes that no response had been recorded by that date.

The content of the Liberal Democrat appeal

Heylings and Davey’s letter, as quoted by the Guardian, asked the prime minister to convene a cross‑party summit that would consider both mitigation and adaptation strategies. The appeal highlighted three core concerns:

• Preparing infrastructure for more intense flooding and storms expected over the coming autumn and winter.
• Coordinating investment in flood‑defence schemes and reservoir capacity.
• Ensuring that policy decisions are informed by the latest climate‑science forecasts, including the unprecedented scale of the upcoming ‘super El Niño’.

Heylings warned that “the scale of this Super El Niño is unprecedented and will have impacts here in the UK exacerbating our extreme weather particularly with more intense flooding and storms over the autumn and winter”.

Government’s stated climate‑adaptation programme

While the prime minister has not replied to the Liberal Democrat request, a government spokesperson outlined the administration’s existing climate‑adaptation measures. The spokesperson said: “We are working to adapt to the changing climate through our work with the National Drought Group, building nine new reservoirs across the country and investing at least £10.5bn by March 2036 to construct new flood and coastal erosion schemes.”

These figures – nine new reservoirs and a £10.5 bn investment target – are the only quantitative data supplied in the packet. They illustrate the scale of the government’s current programme but do not address the specific cross‑party coordination that the Liberal Democrats are seeking.

Political reactions beyond the Liberal Democrats

The lack of a government reply has drawn comment from other parties. Labour MP Clive Lewis, representing Norwich South, publicly backed the Liberal Democrat call for a cross‑party meeting, arguing that “the scale of the threat demands a united parliamentary response”. By contrast, Labour MP Jon Pearce of High Peak warned that “it is unlikely a meeting will happen without a clear invitation from the prime minister”, suggesting that political inertia may impede swift action.

These divergent statements illustrate a broader debate within Westminster about the appropriate mechanism for climate‑policy coordination. Some MPs argue that a formal summit could accelerate funding and legislative reforms, while others contend that existing departmental structures are sufficient.

What remains unknown

Both the Liberal Democrats and the government have left several key questions unanswered:

• Whether Prime Minister Andy Burnham intends to respond to the letter at all, and if so, on what timetable.
• What concrete agenda, if any, would be set for a cross‑party summit – for example, whether it would focus on new legislation, funding allocations, or emergency response protocols.
• How the projected impacts of the ‘super El Niño’ compare with previous El Niño events in terms of expected economic loss, although the packet provides no quantitative estimate.

The Guardian article does not report any statement from the prime minister’s office beyond the generic spokesperson comment on existing adaptation measures. Consequently, the Liberal Democrats’ claim that they have “not had a response” remains unchallenged by any official denial or alternative explanation.

Implications for the coming autumn

If the ‘super El Niño’ does materialise as forecast, the UK could face heightened flood risk in river basins such as the Thames, Severn and Mersey, as well as increased coastal erosion along the eastern and southern coasts. The nine new reservoirs announced by the government are intended to increase water storage capacity, which could mitigate drought but do not directly address flood‑risk management.

The £10.5 bn investment earmarked for flood and coastal‑erosion schemes is a substantial commitment, yet the timing – spread out to 2036 – may not align with the immediate threat posed by the autumnal weather system. Critics argue that without a coordinated political push, the rollout of these projects could be delayed, leaving vulnerable communities exposed.

Looking ahead

As the autumn approaches, the Liberal Democrats have signalled they will continue to press for a response, including possible parliamentary questions and media outreach. The next steps for the government remain uncertain; a formal reply from Prime Minister Burnham could either set a date for a cross‑party summit or reaffirm reliance on existing departmental plans.

Stakeholders such as local authorities, flood‑risk managers and climate‑science bodies are watching the political dialogue closely. Their preparedness will hinge not only on the scale of government investment but also on the willingness of party leaders to cooperate on a unified strategy.

Until a clear answer emerges from the prime minister’s office, the Liberal Democrats’ demand stands as a focal point for debate over how the United Kingdom will confront what scientists describe as an “unprecedented” climate event.