Passengers travelling through Heathrow are set to benefit from a wide-ranging programme of infrastructure and technology upgrades, with the airport confirming a series of major works due to begin next year.

Construction is set to start on a significant revamp of Terminal 4, including the development of a new multi-storey car park and an upgraded check-in area. The work will be delivered in phases to ensure the terminal remains fully operational throughout the project, with completion expected in 2031.

Heathrow will also begin work on a new dedicated baggage system for Terminal 2. Once operational, the system will be capable of handling up to 31,000 bags per day, improving resilience and efficiency for airlines. The airport said the upgrade would help reduce the number of misconnected bags, cutting costs for airlines and improving the overall passenger experience.

Elsewhere, Heathrow is rolling out a new network of cameras across aircraft stands as part of a data-led initiative to improve operational performance. Using artificial intelligence to analyse the footage, the system is designed to speed up aircraft turnaround times, helping airlines operate more punctually while reducing delays. The rollout is being delivered in collaboration with airlines and ground handlers, with full coverage across all terminals expected by the end of 2026.

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Accessibility improvements also form a key part of the investment programme. From 2026, Heathrow will introduce a new purpose-built assistance area in Terminal 2, providing passengers with accessibility needs with direct, dedicated access to security for the first time. The airport is also investing in new mobility equipment and upgrading assistance areas across the site.

In addition, Heathrow will launch a new Tailored Travel Guide, described as the first of its kind at a UK airport. The digital tool will allow passengers with access requirements to enter their travel details and receive a personalised, step-by-step guide to help them navigate the airport and understand what to expect at each stage of their journey.

Heathrow Chief Executive Thomas Woldbye said: "Passengers should expect that every time they travel through Heathrow their journey is better than the last. Last December, we said we’d invest in operational performance and this year we’re the most punctual hub in Europe, almost 99% of bags travelled on expected flights and 97% of security queue times were below 5 minutes, and in January, all passengers in all four terminals will benefit from going through new next generation security. I'm excited to unveil next year's programme which will make Heathrow more user-friendly, more efficient and more resilient for our customers. This investment will flow directly into our nationwide supply chain helping to drive economic growth whilst we make Heathrow even better and more efficient for our customers."