Prime Minister Andy Burnham, who assumed office in July 2026 following Keir Starmer’s resignation, holds sole authority under the Dissolution and Calling of Parliament Act to request an election at any time before the fixed deadline. Parliament first convened in July 2024, so the latest possible date remains mid-August 2029 unless dissolved earlier. In late September 2026, amid media speculation about a potential 2027 vote, Burnham publicly ruled out a snap election, stating voters want focus on delivery rather than “self-serving politics” and confirming the contest will occur in 2029. Recent opinion polls show Labour ahead but short of a majority in a hypothetical immediate vote, with Reform UK in second place. No major catalysts have emerged in the past month to shift this positioning.