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A view of the airfield environment at Heathrow

Heathrow Q6 framework

A programme of upgrades and improvements at the UK’s busiest airport

Customer: Heathrow Airport Ltd

Location: London

Completion: 2021

connection nodes



of cable replaced

lightning bolt


plugs and sockets installed

team celebration


apprentices employed on the framework

electrical equipment


transformers and switching units installed

Following the successful delivery of several projects on Heathrow’s Q4 and Q5 programmes, in 2014 Morgan Sindall Infrastructure was appointed to the five year Q6 framework. In 2019 the Q6 framework agreement was extended for a further two years, Q6 +1, ending in December 2021. Securing Q6+1 recognises us as one of Heathrow’s integral partners.

While Q4 and Q5 encompassed new terminal buildings and major infrastructure, Q6 focused on optimising existing infrastructure and assets. This involved work on a higher volume of smaller projects than previous frameworks, to improve resilience for the world’s busiest two runway airport. Combined, the project increase airport capacity and enhance the passenger experience, enabling sustainable growth across what will ultimately become a zero-carbon transport hub.

Project fact

In 2018 we delivered 474 STEM (Science, Technology, Engineering and Mathematics) hours across 86 local schools to more than 10,600 young people.

We collaborated with other contractors and Heathrow to extend the life of assets such as taxiways, road infrastructure, airfield ground lighting and utility services. Our second strategic programme addressed airport resilience, including the widening of taxiways for A380 aircraft. This improved airline punctuality and optimised areas of the airfield - a key performance improvement used to determine an airport’s ASQ (Airport Service Quality) rating.

A taxiway and runway at Heathrow

Making a difference

We developed and implemented polymer modified bitumen asphalt within the airfield as an alternative to Marshall asphalt, delivering improved durability and whole life value savings. This has now been adopted across all contractors at Heathrow.

We have also partnered with University Technical College (UTC) Heathrow to provide opportunities for young people in the community to enhance their skills and development.

We achieved a CCS score of 46 on the Block 21 Outer project, including the award of 10 for innovation in ‘valuing our workforce’.

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