Gatwick and Heathrow airports have warned of delays as they work to clear a backlog of flights following a disruption to the UK air traffic control system caused by a technical failure at NATS.

UK · 2026-09-09

1. Step 1 · The triggerNATS technical failure disrupts UK air traffic control, reducing available flight capacity.
2. Step 2 · Knock-onHeathrow and Gatwick airports accumulate a backlog of delayed flights, straining airport operations.
3. Step 3 · Knock-onAirlines such as Ryanair face operational disruption, increased costs, and schedule knock-on effects.
4. Step 4 · Reaches youSMEs dependent on air freight or airport-linked services experience delivery delays, lost revenue, and operational bottlenecks.

The trigger is reported by the source below. The steps that follow are Branch²’s traced reasoning — how the shock could reach a business like yours, not a prediction.

Source: City A.M.

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