Heathrow Third Runway: UK Backs £49bn Expansion Plan and Targets 2035 Opening
The UK government has formally chosen Heathrow Airport Limited’s proposal for a third runway as the blueprint for expanding Britain’s biggest airport, setting a course for a planning decision by 2029 and an opening target of 2035. GOV.UK+2Reuters+2 The move, announced on 25 November 2025, marks the most decisive step yet in a decades‑long saga over Heathrow’s growth – and immediately reignites fierce rows over cost, climate impact and the disruption facing communities around the airport.