Stanwell and Stanwell Moor*

To create the space within the airport for more planes and passengers, we need to extend Terminal 5 and build taxiways. We will also make some changes to the cargo area, and the areas close by the airport boundary.

*This page contains one (1) question located within the “Have your say” section at the bottom of the page.

What happens in Stanwell and Stanwell Moor

Changes to this area present an opportunity to reprovide and improve public open space for residents. We need to move the M25 and the A3044 and create more capacity through the key roads and junctions, including Junction 14, the Stanwell Moor Junction and the Southern Perimeter Road.

We will also be providing a lorry park to reduce the number of HGVs parking in communities around the cargo area. We are also proposing a multi-storey parkway which will replace several smaller car parks and provide a shuttle service to the terminals.

We need to divert the Duke of Northumberland’s River and Longford River. Following local feedback, we are suggesting a route to the south of the parkway that forms part of our proposed Green Loop around the airport. The Green Loop will provide a new walking and cycling route from Staines Moor to Poyle and Colnbrook. Public open space and areas for wildlife will be created to the south-east of Junction 14 of the M25, alongside a new surface water treatment area for the airport.

These changes mean we need to move some public open space. The Oaks Road biodiversity site will be replaced to the south of the parkway (see Southern Parkway belw). The allotments at The Vineries will need to move to a site within Stanwell Moor at Silverbeck Way.


Things we’ve changed after listening to you

  • We are proposing that the diverted rivers should be located to the south of the parkway as part of a recreational Green Loop around the airport
  • We have removed the proposed hotel to the south of the parkway – instead we will invest in the green space
  • We are proposing a lorry park to reduce the number of HGVs parking on local streets
  • We have chosen the option for Junction 14 of the M25 that needs less space and has less impact on Stanwell Moor
  • We are providing more detail on the options for the airport boundary
  • We are improving access to the airport through the parkway


Southern Parkway

We need to change how we provide car parking. We intend to build multi-storey car parks closer to main roads to free up space and to reduce traffic on local roads.

Visualisation of the southern parkway.
Visualisation of the southern parkway.

To help us avoid a large increase in traffic and parking we are investing in public transport, walking and cycling. We will encourage more people working at the airport to use their cars less and public transport or other options more. This will free up more parking spaces for passengers and for other vehicles like taxis.

To reduce the amount of traffic on local roads we are also changing where we want people to park. We are proposing removing lots of surface-level car parking and providing two multi-storey parkways, one on the current Cemex site near the southern boundary of the airport and one to the north, between Sipson and Harlington.

We are putting them close to the motorways, and improving or reproviding junctions and roads that will serve them, to keep journeys on local roads to a minimum.

The new building will be designed to a high quality, with reprovided public open space to the south including an enhanced landscape accommodating the diverted river channel and a section of the new ‘Green Loop’ around the airport.

Improved connections to the airport will be provided to the communities in Stanwell and Stanwell Moor through access to the parkway shuttle to the terminals.

Southern parkway
Aerial view of proposed southern parkway.
Southern parkway
View from the north.

Connecting to the parkway

To keep traffic off local roads, we will create a direct link between the M25 and the parkway. Residents will benefit from walking, cycling, and shuttle connections to the airport.

Riverside view of the southern parkway.

Our proposed new link will pass through Stanwell Moor Junction, which we will upgrade to avoid airport traffic holding up local journeys.

The Southern Perimeter Road will be lowered by up to 8 metres (about 26ft) to pass under the roundabout. When we consulted on this proposal last year, some people were concerned about the amount of land it would need. The option we are now proposing has the smallest footprint possible, minimising property impacts.

We are also proposing to widen the Southern Perimeter Road to three lanes in each direction between Stanwell Moor Junction and the cargo area. In addition we will provide local pedestrian and cycle access on these routes and to the airport.

We will create a shuttle connection between the parkway and Terminal 5. This can be used by local residents to access destinations including central London by bus, coach, tube and train.

Green space around the villages

The landscape and green spaces in the Colne Valley Park are to be improved through a network of connecting green routes and an increase to publicly accessible open space.

The improved landscape will help strengthen the river corridors and Colne Valley Park, and protect existing natural features.

To the north of Stanwell Moor and Stanwell the realigned road is screened by trees and planting. The re-routed rivers allow for increase public access to the river banks and better connectivity.

Enhancement of the existing Stanwell Moor Recreation Ground and extending recreational facilities and public open space to Stanwell Moor will help promote healthy living and build stronger communities.

Green Loop
Boost recreation and healthy living through walking and cycling, connecting communities and important green spaces
Habitat sites
Enhance corridors for wildlife and biodiversity and strengthen the identity of the River Colne and Colne Valley Park
Stanwell Moor Recreation Ground
Create a softened boundary to the north with the redirected rivers, noise bund and soft landscape
Stanwell Riverside Park
Create open space and improve access to public open space, encouraging recreational walking and cycling
Balancing Ponds
Creation of large reed bed between Stanwell Moor and M25
Promote growing and foraging opportunities through projects such as allotments
Heathrow's green space proposals for your area
1) Stanwell Riverside Park. 2) Enhanced public open space. 3) River Colne Valley. 4) Reed bed. 5) Green loop.

Airport boundary

We have some options for how we design the new boundary of the airport. It needs to be at least three metres high and have a three-metre security zone on each side but it can be different in places around the airport.

In other places it may be necessary to have a taller boundary to help minimise noise and visual intrusion. Where possible we will incorporate landscape planting to soften its appearance.

To the north of Stanwell Moor, the realigned road will be screened by trees and plants along the rivers. These continue along the area between Stanwell and the southern parkway.

The image below shows the sort of things we could put between the airport boundary and Stanwell and Stanwell Moor
at the points marked A, B and C on the map in the second image below.

Airport boundary
Illustrative plan showing the indicative route of the airport boundary
Airport boundary options


Expanding Heathrow is more than building a new runway – we also need to build facilities for passengers, make changes to roads and car parks, and relocate some of the existing airport infrastructure.

Over the past two years we have engaged with and considered the views of over 1,000 stakeholders and our local community to help develop our preferred scheme. Over time, our new runway will increase our flights from 480,000 to just over 750,000 per year. About 80 million people fly with us each year today. This will increase to about 142 million. We will also double the amount of cargo we can handle.

As part of our application to expand Heathrow, we propose that some of the extra flights, which could be up to 25,000 additional flights per year, are introduced early on our existing two runways prior to our proposed third runway being brought into operation.

The map below shows the key features of the new airport when we have finished building. On Local overview – How we will build it we show the steps we will take to get there.

We want to finish the runway as soon as possible. If we get permission, we are aiming to complete it by the end of 2026. When the runway is open we will have finished most of the work closest to communities. Most work after that will be inside the new airport boundary. The main works outside the new airport boundary will be to Stanwell Moor Junction, the southern parkway, and the northern parkway.

Local construction impacts

The images below show expected construction impacts at different times. For more information on each period, please click on the expandable sections below.

Early construction
Peak construction (2023-2024)

Early construction

  • Earthworks and other construction activity will commence to the west of Terminal 5.
  • Three construction support sites will be established. They are shown on the map above. These sites will include functions like welfare facilities, offices and parking for workers and the holding of HGVs prior to entering the main construction site.
  • Noise and light mitigation measures such as landscaping and fencing will be installed to reduce the impact on the communities of Stanwell and Stanwell Moor. Where possible we will start to put in place permanent landscaping, for example to the south of the diverted river.
  • Utility supplies will be rerouted to ensure electricity, water and gas suppliers are protected for the local community.
  • Works to create the new channels for the Longford River and Duke of Northumberland’s River will commence to the north of Stanwell and Stanwell Moor.
  • Modifications will begin to J14 of the M25 in preparation for the M25 diversion and improvements to the A3113.

Peak construction (2023-2024)

  • Earthworks and other construction activity will continue to the west of Terminal 5. The construction support sites will be fully operational and supporting all activities across the expansion project. They will operate to suit the demand of the sites including 24-hour and 7-day per week support.
  • The new channels will be completed for the Longford and Duke of Northumberland’s rivers. These will have minimal engineered features and have the appearance of natural open channels.


  • We will be in the final stages of construction of the runway, taxiways, other facilities and airside roads within the airport boundary.
  • Construction of the new A3113 Airport Way to the north of Stanwell Moor commences during this phase, including a new roundabout with the A3044. We’ll also complete the modification of Junction 14 of the M25 during this phase.
  • The new road link from the M25 Junction 14a to Terminal 5 will also be completed.
  • Around the exterior of the site we’ll remove temporary construction materials and install new permanent landscaping.
  • The construction of the first phase of the southern parkway is due to commence in 2026. The development to create parking and transport connections will be done in a phased approach with the remaining sections still being used as a construction support site.


  • During this phase, the construction support site north of Stanwell will begin to transform into the new southern parkway. The site will be developed in stages and will include colleague and passenger car parking and a new transit system for connection to the airport.
  • New pedestrian access bridges and underpass links will connect the southern parkway with both Stanwell and Stanwell Moor to ensure the community can use the new transport links.


  • The southern parkway construction will complete creating new parking capacity.
  • The new transit systems will be open providing access to the airport for passengers, the local community and colleagues.

Roads, parking and traffic

Road and parking

To make space for the expanded Terminal 5 and the taxiways, we will need to divert the A3044. The M25 also needs to move west and into a tunnel to make space for the new runway.

We are proposing a new route for the A3044 from the roundabout at Junction 14 to the west of the M25 and east of Poyle. It would then join the Colnbrook By-Pass to the north of Colnbrook.

We propose to widen the A3044 north of Stanwell to increase its capacity and improve access to the airport. Our proposals allow for three lanes in each direction, separated by a central reservation.

We can also provide a parallel cycle path. We are investigating the potential for bus lanes.

A lorry park is proposed to the west of the southern runway and north of the Stanwell Moor Junction. This will help reduce HGV parking on local roads and reduce congestion around the cargo area.

A new southern road tunnel is proposed to connect to Terminals 2 and 3 from an improved roundabout at the junction with Beacon Road to the west of Terminal 4. We are also investigating providing cycle access through the tunnel.

Changes to roads around Stanwell and Stanwell Moor

Changes to traffic

While we do not expect the expanded airport to attract more traffic, there may still be localised increases and decreases. While the airport is being built there will also be construction traffic on some roads connecting the airport to the strategic road network.

The maps below give a preliminary indication of the possible changes to traffic levels in 2022 (during the construction phase), and in 2035 (nine years after we expect the runway to open). These forecasts will be reviewed and updated before we formally apply for consent to expand the airport.

Your responses to this consultation will help us to understand how these potential changes would affect you. There are a range of measures we could use to address any specific concerns. These range from improved signage or changes to junction layouts to measures to promote the use of public transport and encourage the more efficient use of cars.

Changes to traffic - 2022
Construction traffic supporting the expansion of Heathrow is expected to be highest in late 2022/early 2023, just prior to the expected opening of the proposed construction rail link. Traffic on Horton Road west of Junction 14 would be expected to increase in 2022, as this is being considered as one of the main access routes for the construction support sites. We do not expect any substantial increases in traffic on other local roads around Stanwell and Stanwell Moor as a result of expansion in 2022.
Changes to traffic 2035
Results of preliminary transport modelling indicate that in 2035, once the expanded airport is fully operational, daily traffic levels could be higher on Horton Road and Park Road as a result of expansion, and could also be higher southbound on Stanwell Moor Road and on London Road east of Town Lane. We expect that traffic would be lower northbound on Stanwell Moor Road and on Town Lane itself as a result of expansion.

Air quality – Stanwell and Stanwell Moor

The expanded airport will be designed to reduce emissions and our plans include ways to manage:

  • The way that people travel to the airport by;
  • increasing the use of public transport;
  • The use of cleaner, more sustainable vehicles; and,
  • Emissions from older, more polluting cars by introducing a Heathrow Ultra Low Emission Zone to charge these vehicles to access the airport.

During construction, air quality in Stanwell and Stanwell Moor may be affected by dust and vehicle emissions. We will monitor these sites, but if you notice dust or smells please let us know.

There will be increases in pollutant levels associated with expanding the airport, but these are not considered to be significant. Levels of all pollutants will be within the levels set by the Government to protect health.

The smell of aviation fuel may be noticeable at locations closest to the airport during certain weather conditions.

For more information, please see Local overview – Air quality.

Noise in Stanwell and Stanwell Moor

A larger Heathrow may mean local communities will hear more noise from construction activities, from aircraft on the ground and in the air, and from local roads.

We will implement a range of measures to reduce the effects on the local community.

Construction noise

The construction of the A3113, the southern parkway and earthworks will generate noise. All our construction activities will follow a ‘Code of Construction Practice’ to help reduce impacts.

We will provide insulation to reduce noise impacts for homes and community buildings where it is needed. In some instances, we may offer temporary re-housing, for example during periods of very noisy works.

More information on insulation and temporary re-housing is available in the Noise Insulation Policy.

Aircraft & ground noise

Stanwell Moor currently has flights directly overhead when the southern runway is in use for departures on westerly operations.

The existing northern runway is the main runway used for arrivals during easterly operations due to the legacy of the “Cranford Agreement”.

Before the new runway opens we are planning to introduce runway alternation on easterly operations meaning that both the northern and southern runways will take routine arrivals.

Stanwell is not currently overflown but may hear aircraft noise close by.

Road noise

Noise from the changed road system around Stanwell and Stanwell Moor may be noticeable in the villages.

We will continue to assess road noise as we finalise our plans and may find that noise insulation for homes, noise barriers and very low noise road surfacing are required.

We will review the need for noise insulation, screening and very low noise road surfacing as part of the Environmental Statement to reduce noise further.

Reducing noise effects

We have a number of proposals and plans in place to reduce these noise effects, which are described within Local overview – Reducing noise effects.

We have not as yet identified any community buildings in Stanwell and Stanwell Moor where noise insulation is required.

Further information

For further information on how we have assessed noise see the PEIR, Volume 1, Chapter 17: Noise and Vibration, Section 17.11. For more information on our proposals, please see Future Runway Operations.

Runway use to control noise

How we run our three-runway airport in the future will be key to controlling aircraft noise in local communities. Alternating runways will provide respite from aircraft noise.

Choosing which runway is being used for take off and landing and when aircraft arrive and depart during the night are the main ways we can control noise.

Runway alternation

We are proposing that we change how we use the runways at either 2pm or 3pm everyday. The runway alternation patterns will repeat every four days (so day five will have the same pattern as day one). See image in the next section.

Night flights

We propose to introduce a ban on scheduled night flights of 6.5 hours between 11pm and 5:30am.

Our proposals ensure that, in normal operations, Stanwell and Stanwell Moor can expect at least 7 hours when aircraft will not be flying overhead between 10pm and 7am every night.

Also, if you are overflown in the late evening (after 11pm) you will not be overflown in the morning (before 6am).

What will this be like in Stanwell and Stanwell Moor?

The illustration below shows what this would mean in the future, compared to today, for daytime and night-time respite in Stanwell and Stanwell Moor over a 4 day period. The green colours show periods of respite, and the orange colours show periods of direct overflight.

Whether Stanwell Moor gets noise from planes overhead will depend on the direction of the planes (heading east or west) and which “mode” the southern runway is being used in. The modes are landings only, departures only or “mixed- mode” (both landings and departures).

For example, when planes are taking off to the west, Stanwell Moor will not get noise overhead when the southern runway is being used for landings. It will get noise when it is being used for departures and in mixed mode.

When planes are taking off to the east, Stanwell Moor will not get noise overhead when the southern runway is being used for departures. It will get noise when it is being used for landings and in mixed mode.

When there is no noise overhead, there will still be noise from planes on the ground and on the existing runways. The Stanwell and Stanwell Moor communities will hear noise from aircraft engines as they taxi from the terminals to the runway for departure. The engine noise will increase as the pilot accelerates away down the runway to take off but there would be no planes overhead.

Events and more information

Please also see the related local area overview pages for more information:

  • During this consultation we are also hosting 43 events. To find an event near you, visit Events.

Have your say

Our Heathrow Expansion and Your Area documents set out our development proposals, their potential effects and how we propose to reduce them.