M25 junction 28 improvements
Upgrading junction 28 of the M25 between the M25 and the A12 in Essex.
Information portal
You can find out more about our improvements on our information portal
Go to our portalProject information
We have identified a number of issues at the junction which are impacting on the local and regional economies and their ability to achieve their full potential. These include:
- congestion and delay disrupting journeys on our road network and local roads
- actual and significant perceived safety concerns connected to driver movements on the roundabout
- resilience to incidents is poor, resulting in significant disruption and unreliable journey times
- poor air quality
We reviewed this junction in our London Orbital and M23 to Gatwick Route Strategy Evidence Report, and this scheme was included in the March 2015 Road Investment Strategy. In response to this we developed our Delivery Plan which outlines the next steps for taking the scheme forward.
Our research shows that if we don’t improve junction 28 by 2037, we can expect:
- increased congestion and lengthy queues, at least 5 times worse than at present
- a 25% reduction in average speeds through the junction (excluding mainline M25 and A12)
- widespread disruption following incidents
- constraints on future development and growth opportunities
- local air quality issues to deteriorate
To find out more about our improvements visit our information portal.
We’ve established a number of scheme objectives to address the challenges:
- increase capacity and reduce congestion and delays by providing an improved link from M25 to A12
- reduce the incident rate and resulting disruption by increasing the capacity of the roundabout
- improve the safety on the roundabout by reducing traffic levels and redesigning the existing layout
- cater for future traffic demands to enable development and economic growth
- minimise the impact on local air quality and noise by smoothing the traffic flow
- protect access for non-motorised users (pedestrians and cyclists) and improve conditions wherever possible
Documents
Brochure
Response form
Banners
Scheme context plan
Scheme plan
Preliminary Environmental Information Report non-technical summary
Preliminary Environmental Information Report Volume 1
Preliminary Environmental Information Report Volume 2
Preliminary Environmental Information Report Volume 3 Chapters 1-2
Preliminary Environmental Information Report Volume 3 Chapters 2-6
Preliminary Environmental Information Report Volume 3 Chapters 7-10
Preliminary Environmental Information Report Volume 3 Chapters 11-15
Section 47 Statutory Notice
Section 48 Statutory Notice
Development Consent Order Leaflet
Scheme Assessment Report
Statement of Community Consultation
Data Protection and You – GDPR Banner
Technical Appraisal Report
Technical Appraisal Report - Appendices A & B
Technical Appraisal Report - Appendix C
Technical Appraisal Report - Appendix D
Technical Appraisal Report - Appendix E
Technical Appraisal Report - Appendix F
Technical Appraisal Report - Appendix G
Technical Appraisal Report - Appendix H
Technical Appraisal Report - Appendix I
Technical Appraisal Report - Appendix J
Technical Appraisal Report - Appendix K
The Development Consent Order (DCO) process was established by the Planning Act 2008 and is used for certain large and complex schemes (including highway improvements) that have been designated as a Nationally Significant Infrastructure Project (NSIP) by the Government.
The Secretary of State for Transport granted the Development Consent Order (DCO) for the M25 junction 28 improvements on 16 May 2022. Links to key DCO documentation can be found below:
- Examining Authority’s report and recommendations to the Secretary of State for Transport
- Secretary of State for Transport’s decision letter and statement of reasons
- Development Consent Order as made by the Secretary of State for Transport
You can view our full Development Consent Order application on the Planning Inspectorate website.
This includes documents identified under Article 43 and Schedule 9 of our Development Consent Order, which have been certified as true copies by the Secretary of State.
Development Consent Order – Requirements Register
Requirements are conditions that have been included in the DCO, which control how the project must be implemented (constructed and maintained). Implementing the DCO in accordance with these conditions involves completing consultation and approval processes that have been defined in the DCO. These processes are referred to here and in the DCO as “discharging” the requirements.
This Requirements Register is a live document and will be updated as the process to discharge the requirements progresses.
The latest version will always be published below:
View the Requirements Register.
This register will be maintained for three years following completion of the project. The register sets out:
- each requirement
- whether the requirement needs approval by the Secretary of State (or other duty holder)
- whether any approval has been applied for or given

Traffic information
Information about scheduled roadworks and events on our motorways and major roads.Sign up for updates!
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