As of 2026, Heathrow Terminal 1 remains a "ghost terminal," having officially closed to the public on June 29, 2015. Once the largest terminal in Europe when it opened in 1968, it was decommissioned to allow for the expansion of Terminal 2 (The Queen's Terminal). While the main structure still stands, its interior has been stripped of retail and airline counters, with many items auctioned off years ago. Today, the building is primarily used for emergency services training, baggage system overflow for Terminal 2, and staff storage. In 2025, Heathrow management reiterated plans for its eventual full demolition to make way for the second phase of Terminal 2's expansion, though a firm 2026 start date for the wrecking balls remains tied to the airport's broader long-term master plan and the ongoing debates regarding a potential third runway.