Heathrow's chief executive has officially launched the planning application for its controversial third runway, a project estimated to cost £33 billion. The airport is now urging regulators and government bodies to expedite the approval process if it hopes to meet its ambitious target of beginning construction by 2029. This formal submission marks a critical step forward.

For years, expanding the UK's busiest airport has been a political minefield, facing fierce opposition over environmental concerns and local noise pollution. Proponents, however, argue that a larger Heathrow is vital for maintaining Britain's competitive edge in global trade post-Brexit. The debate pits economic growth directly against climate commitments.

Success hinges on navigating a complex regulatory maze and securing widespread political support. The government must approve the final plans, a decision that will be heavily scrutinized by airlines, business groups, and local communities. Watch for fierce lobbying efforts from all sides as this multi-decade infrastructure saga enters its most decisive phase yet.