A PDF map that shows the counties and unitary authorities in the United Kingdom as at 1 April 2023. (File Size - 583 KB)

This dataset is refreshed on a weekly basis from the datasets the team works on daily.Last update date: 20 November 2025.National Highways Operational Highway Boundary (RedLine) maps out the land belonging to the highway for the whole Strategic Road Network (SRN). It comprises two layers; one being the an outline and another showing the registration status / category of land of land that makes up the boundary. Due to the process involved in creating junctions with local highway authority (LHA) roads, land in this dataset may represent LHA highway (owned by National Highways but the responsibility of the LHA to maintain). Surplus land or land held for future projects does not form part of this dataset.The highway boundary is derived from:Ordnance Survey Mastermap Topography,HM Land Registry National Polygon Service (National Highway titles only), andplots researched and digitised during the course of the RedLine Boundary Project.The boundary is split into categories describing the decisions made for particular plots of land. These categories are as follows:Auto-RedLine category is for plots created from an automated process using Ordnance Survey MasterMap Topography as a base. Land is not registered under National Highways' name. For example, but not limited to, unregistered ‘ancient’ highway vested in Highways England, or bridge carrying highways over a rail line.NH Title within RedLine category is for plots created from Land Registry Cadastral parcels whose proprietor is National Highways or a predecessor. Land in this category is within the highway boundary (audited) or meets a certain threshold by the algorithm.NH Title outside RedLine category is for plots created in the same way as above but these areas are thought to be outside the highway boundary. Where the Confidence is Low, land in this category is yet to be audited. Where the Confidence is High, land in this category has been reviewed and audited as outside our operational boundary.National Highways (Technician) Data category is for plots created by National Highways, digitised land parcels relating to highway land that is not registered, not yet registered or un-registerable.Road in Tunnel category, created using tunnel outlines from Ordnance Survey MasterMap Topography data. These represent tunnels on Highways England’s network. Land is not registered under National Highways' name, but land above the tunnel may be in National Highways’ title. Please refer to the definitive land ownership records held at HM Land Registry.The process attribute details how the decision was made for the particular plot of land. These are as follows:Automated category denotes data produced by an automated process. These areas are yet to be audited by the company.Audited category denotes data that has been audited by the company.Technician Data (Awaiting Audit) category denotes data that was created by National Highways but is yet to be audited and confirmed as final.The confidence attribute details how confident you can be in the decision. This attribute is derived from both the decisions made during the building of the underlying automated dataset as well as whether the section has been researched and/or audited by National Highways staff. These are as follows:High category denotes land that has a high probability of being within the RedLine boundary. These areas typically are audited or are features that are close to or on the highway.Moderate category denotes land that is likely to be within the highway boundary but is subject to change once the area has been audited.Low category denotes land that is less likely to be within the highway boundary. These plots typically represent Highways England registered land that the automated process has marked as outside the highway boundary.Please note that this dataset is indicative only. For queries about this dataset please contact the GIS and Research Team.

The Network Model digitally represents England’s Strategic Road Network. The model contains critical information about our road’s location, names, lanes and widths. The Network Model was derived from Ordnance Survey (OS) Highways data and enriched with internal datasets. It reflects National Highways roads that are open for traffic and have been validated against our Operational Highway Boundary (RedLine). To ensure the model remains accurate, we have implemented processes to track changes across the network. However, if you have noticed any inaccuracies in the data, please report it here. This form is to be used to report data issues only. In this initial release, speed limit and smart motorway information has been removed pending data validation. To download a file geodatabase containing all layers of the network model and their relationships please use this link. For more information about the Network Model please visit our landing page and technical hub. For maintenance issues on the network please report here. For non-emergency incidents please contact our Customer Contact Centre on 0300 123 5000.The data is published under an Open Government Licence.

The statistics refer to the volume of road traffic in Wales. Road traffic estimates for Wales are compiled by the Department for Transport on behalf of the Welsh Government. These estimates are based on annual roadside manual road traffic counts carried out across Wales during the year. These roadside counts are combined with automatic traffic count (ATC) data and road lengths to produce overall traffic estimates. Traffic estimates for major roads are based on a census of all such roads whereas traffic estimates for minor roads are estimated by calculating growth rates from a fixed sample of count points on the minor road network. Further details of the methodology are available from the DfT at the link below: https://www.gov.uk/government/publications/road-traffic-speeds-and-congestion-statistics-guidance . All surfaced roads are included in the estimates. The categories are: Major roads: Motorways. Dual carriageways designed for fast traffic with access limited to motor vehicles, and with relatively few places for joining or leaving. The only motorway in Wales is the M4. A Trunk roads. Part of the strategic road network owned by and operated on behalf of Government A County roads. All other A roads. Estimates for A roads are also available with sub-categories for urban and rural roads on StatsWales. Urban roads are those within the boundaries of settlements with a population of 10,000 or more, and rural roads are all other non-motorway major roads. Minor roads: B roads. Roads intended to connect different areas, and to feed traffic between A roads and smaller roads on the network. Classified unnumbered. Smaller roads intended to connect together unclassified roads with A and B roads, and often linking a housing estate or a village to the rest of the network. Similar to ‘minor roads’ on an Ordnance Survey map and sometimes known unofficially as C roads. Unclassified. Local roads intended for local traffic. The vast majority of roads fall within this category. The analysis by vehicle type is based on roadside observation where vehicles are classified according to their general appearance. The vehicle types identified are: 1) Pedal cycles: Includes all non-motorised cycles, 2) Motorcycles: Two-wheeled motor vehicles, including mopeds, motor scooters and motorcycle combinations, 3) Cars and taxis: Includes estate cars, all light vans with windows to the rear of the driver's seat, passenger vehicles with 9 seats or fewer, three-wheeled cars, motorised-invalid carriages, Land Rovers, Range Rovers and Jeeps. Cars towing caravans or trailers are counted as one vehicle, 4) Buses and coaches: Includes all public service vehicles and works buses other than vehicles with less than 10 seats, 5) Light vans: All goods vehicles up to 3,500kg gross vehicle weight. This includes all car-based vans and those of the next larger carrying-capacity, such as transit vans. Also included are ambulances, pick-ups, milk floats and pedestrian-controlled motor vehicles. Most of this group are delivery vans of one type or another, 6) Goods vehicles: All goods vehicles over 3,500kg gross vehicle weight. Includes tractors (without trailers), road-rollers, box vans and similar large vans. A two-axle motor tractor unit without trailer is also included, 7) All motor vehicles: All vehicles except pedal cycles. Traffic volume is measured using Vehicle Kilometres (VKM), which are calculated by multiplying the annual average daily flow of traffic by the corresponding length of road. For example, 1 vehicle travelling 1 kilometre a day for a year would be 365 VKM over a year. In this release estimates are presented as billion vehicle kilometres (bvk).

1st July 2016 Update WebTRIS Phase 1 is now available and can be accessed at http://webtris.highwaysengland.co.uk We are in the process of updating the way that traffic flow data is made available to our external users to replace the old TRADS website. The new platform will deliver a more modern experience, utilising Google Maps with count site overlays and bespoke downloadable reporting capabilities. This new service will be referred to as ‘WebTRIS’. The new development will contain all of the elements users are already familiar with; searching on Site ID’s and reviewing reports based on Site ID’s etc. but will also modernise the look and feel of the product and allow users to select an area of interest by clicking on a map. Development began in early February 2016 and is expected to be complete in July 2016. This is a Phase 1 release. A Phase 2 development is planned to take into account user feedback. On-going updates will be released here with videos showing the product as it grows. There will also be live demonstrations as the product nears go-live and opportunities to take part in User Acceptance Testing and feedback sessions. We are working hard to improve the level of service that we provide and thank you for your patience while we do so. We will keep you informed on progress with the next update due in May. This data series provides average journey time, speed and traffic flow information for 15-minute periods since April 2015 on all motorways and 'A' roads managed by Highways England, known as the Strategic Road Network, in England. Journey times and speeds are estimated using a combination of sources, including Automatic Number Plate Recognition (ANPR) cameras, in-vehicle Global Positioning Systems (GPS) and inductive loops built into the road surface. Please note that journey times are derived from real vehicle observations and imputed using adjacent time periods or the same time period on different days. Further information is available in 'Field Descriptions' at the bottom of this page. This data replaces the data previously made available via the Hatris and Trads websites. Please note that Traffic Flow and Journey Time data prior to April 2015 is still available on the HA Traffic Information (HATRIS) website which can be found at https://www.hatris.co.uk/

The statistics refer to the volume of road traffic in Wales. Road traffic estimates for Wales are compiled by the Department for Transport on behalf of the Welsh Government. These estimates are based on annual roadside manual road traffic counts carried out across Wales during the year. These roadside counts are combined with automatic traffic count (ATC) data and road lengths to produce overall traffic estimates. Traffic estimates for major roads are based on a census of all such roads whereas traffic estimates for minor roads are estimated by calculating growth rates from a fixed sample of count points on the minor road network. Further details of the methodology are available from the DfT at the link below: https://www.gov.uk/government/publications/road-traffic-speeds-and-congestion-statistics-guidance . All surfaced roads are included in the estimates. The categories are: Major roads: Motorways. Dual carriageways designed for fast traffic with access limited to motor vehicles, and with relatively few places for joining or leaving. The only motorway in Wales is the M4. A Trunk roads. Part of the strategic road network owned by and operated on behalf of Government A County roads. All other A roads. Estimates for A roads are also available with sub-categories for urban and rural roads on StatsWales. Urban roads are those within the boundaries of settlements with a population of 10,000 or more, and rural roads are all other non-motorway major roads. Minor roads: B roads. Roads intended to connect different areas, and to feed traffic between A roads and smaller roads on the network. Classified unnumbered. Smaller roads intended to connect together unclassified roads with A and B roads, and often linking a housing estate or a village to the rest of the network. Similar to ‘minor roads’ on an Ordnance Survey map and sometimes known unofficially as C roads. Unclassified. Local roads intended for local traffic. The vast majority of roads fall within this category. Traffic volume is measured using Vehicle Kilometres (VKM), which are calculated by multiplying the annual average daily flow of traffic by the corresponding length of road. For example, 1 vehicle travelling 1 kilometre a day for a year would be 365 VKM over a year. In this release estimates are presented as billion vehicle kilometres (bvk).

Ordnance Survey ® OpenMap - Local Buildings are polygon features that represent a built entity that includes a roof. This is a generalized building and could be made up of an amalgamation of other buildings and structures.Ordnance Survey ® OpenMap - Local Important Buildings are polygon features that represent buildings that fall within the extent of a functional site across England, Wales and Scotland. Important Buildings are classified into a number of building themes such as: Attraction and Leisure - A feature that provides non-sporting leisure activities for the public. Includes Tourist Attractions.Air Transport - This theme includes all sites associated with movement of passengers and goods by air, or where aircraft take off and land. Includes Airport, Helicopter Station, Heliport.Cultural Facility - A feature that is deemed to be of particular interest to society. Includes Museum, Library, Art Gallery.Education facility - This theme includes a very broad group of sites with a common high level primary function of providing education (either state funded or by fees). Includes: Primary Education, Secondary Education, Higher or University Education, Further Education, Non State Secondary Education, Non State Primary Education, Special Needs Education.Emergency Services - Emergency services are organizations which ensure public safety and health by addressing different emergencies. Includes: Fire Station, Police Station.Medical Facility - This theme includes sites which focus on the provision of secondary medical care services. Includes: Medical Care Accommodation, Hospital, Hospice.Religious Building - A place where members of a religious group congregate for worship. Includes: Places of Worship (churches etc.)Retail - A feature that sells to the general public finished goods. Includes: Post OfficeRoad Transport - This theme includes: Bus Stations, Coach Stations, Road user services.Sports and Leisure Facility - A feature where many different sports can be played. Includes: Sports and Leisure CentreWater Transport - This theme includes sites involved in the transfer of passengers and or goods onto vessels for transport across water. Includes: Port consisting of Docks and Nautical Berthing, Vehicular Ferry Terminal, Passenger Ferry Terminal. With OS OpenMap - Local Buildings and Important Buildings you can: Understand your area in detail, including the location of key sites such as schools and hospitals.Share high-quality maps of development proposals to help interested parties to understand their extent and impact.Analyse data in relation to important public buildings, roads, railways, lines and more.Use in conjunction with other layers such as Functional Sites – an area or extent which represents a certain type of function or activity.Present accurate information consistently with other available open data products. For more information on OS OpenMap see their website: https://www.ordnancesurvey.co.uk/products/os-open-map-local The currency of the data is 10/2025

These layers digitally represent diversion routes used to manage traffic in response to road closures required across England's Strategic Road Network unplanned events.As part of National Highways' commitment to sharing data, the diversion routes data provides information to help ensure road users are better informed, particularly freight customers, which is why we are communicating the suitability of diversion routes for different vehicles as per customer service standards GG 903 - Customer service standard for diversion routes for unplanned events and GG 907 - Customer service standard for diversion routes for planned works and activities.The dataset consists of the following:Diversion Route: Contains all the diversion routes, and their applicability for different vehicles and link to the closed stretch of the Strategic Road Network that would trigger the diversion route to be implementedSRN Closed Stretch: Contains information about sections of the Strategic Road Network that when closed will lead to a diversion being implementedDiversion Point: Contains all the restrictions along the diversion route, such as height and width restrictions due to low bridges or narrow lanesTo ensure this information remain accurate, the dataset pulls from layers linked to those maintained by National Highways Resilience Planners.For any issues/queries related to the data, please contact: digitallaboperations@nationalhighways.co.ukFor all other issues/queries please contact: GIS@nationalhighways.co.ukThe data is published under an Open Government Licence.

It’s a crisp fall morning in Portland. A local barista opens her shop and pulls out her phone to check delivery routes for fresh beans. She taps the familiar red-and-white pin icon, Google Maps. Across the globe in Tokyo, a student uses Street View to navigate to his university. Meanwhile,...

IntroductionThis is a spatial dataset that describes the location and extent of Wood Pasture and Parkland habitat across England. Wood Pasture and Parkland is a Priority Habitat as listed in the UK Biodiversity Action Plan (UKBAP) 2008.Wood pastures and parkland are the products of historic land management systems and designed landscapes and represent a vegetation structure rather than a particular plant community. Typically, this structure consists of large, open-grown or high forest trees (often pollards) at various densities, in a matrix of grazed grassland, heathland and/or woodland floras.Why is it important that Natural England publishes this dataWood Pasture and Parkland (England) is a priority habitat as identified in the UK Biodiversity Action Plan (UKBAP) and listed as being of principal importance for the purposes of conserving or enhancing biodiversity under Section 41 of the Natural Environment and Rural Communities (NERC) act. Wood-pasture and parkland are mosaic habitats valued for their trees, especially veteran and ancient trees and the plants and animals that they support. Specialised and varied habitats within woodpasture and parkland provide a home for a wide range of species, many of which occur only in these habitats, particularly insects, lichens and fungi which depend on dead and decaying wood.LineageThe Wood Pasture and Parkland Inventory (WPPI) was initially created in 2011 under contract by Exegesis as a provisional inventory. The inventory was established by collating exsisting datasets, drawing on specialist knowledge, refering old maps and aerial photography. This inventory included data from: OS county series maps (Epoch 1 1843 - 1893, Epoch 2 1891 - 1912, Epoch 3 1904 - 1939, Epoch 4 1919 - 1943) and first and second edition UK perspective Aerial Photographs dated 1999 to 2009. Modern OS maps were used to created polygon boundaries and these boundaries were mapped to the OS Master Map framework.This first inventory did not cover all England, subsequent inventories added missing counties e.g. Greater London by using the same techniques.Data was added to the inventory in subsequent years based on expert feedback and survey work.The inventory was updated in 2020 by collating data from the existing dataset, local record centers, local councils and other sources all verified by OS county series Epoch 1 - 4 maps and aerial photography. Parkland was defined as areas with a minimum of 3 trees, excluding boundary trees, which had less than 250 m between trees. Park extent was mapped to boundary features where park trees were less than 100 m from the boundary or the boundary included a large tree which was less than 250 m from a park tree.Some areas of woodland were included where possible park trees were present. Some open areas and wooded areas were not removed as the precise extent of parkland habitat was difficult to determine from aerial photography.Cemeteries and churchyards were excluded unless they were entirely within the park boundary.The minimum mappable unit for the inventory was 0.25ha. Metalled roads and rivers were excluded according to Natural England mapping rules, therefore some areas <0.25ha may be present if separated by a road.In 2025 the inventory was updated further by remapped all polygons to a new version of OSMM and by aligning the attributes to the Priority Habitats Inventory (PHI), which had also been updated since 2020. A series of datasets remapping Cumbria was added to the inventory to replace and update all the polygons Cumbria. Further data was added via submission to the PHI mailbox (habitatinventories@naturalengland.org.uk) on consultation with NE habitat specialists.AttributionColumn HeadingFull NameFormatDescriptionObjectIDObjectIDgeometryGeodatabase identifierShapeShapegeometrySpatial format identifierMainHabsMain HabitatsTextName of Habitat presentHabCodesHabitat CodesTextCode representing main habitats present in the polygonFeatDescFeature DescriptionTextAdditional information about the nature of the habitat or features presentFeatCodesFeature CodesTextCode corresponding to the habitat feature descriptionsOtherClassOther habitat classificationsTextAdditional Habitat classification information relating to main habitatsAddHabsAdditional habitats presentTextList of codes for additional habitats present within the polygonPrimSourcePrimary data sourcesTextList of primary sources for main habitat present in polygon. With corresponding HabCode in bracketsAreaHaArea in hectaresNumericPolygon area in hectaresVersionPublication versionTextDate of publication for current updateUIDUnique IDTextUnique ID for the polygon based on XY location coordinatesShape_LengthShape_LengthNumericPolygon perimeterShape_AreaShape_AreaNumericPolygon area Full metadata can be viewed on data.gov.uk.

Introduction To ensure we deliver a safe and reliable electricity supply or to invest in our network, we may need to carry out works on highways and footways. This dataset contains details of our proposed street and roadwork permit applications taking place on the highway within UK Power Networks' footprint. This report is refreshed daily. For further information including contact details, please visit https://www.ukpowernetworks.co.uk/our-company/road-works

Methodological Approach

Data Extraction: Data is extracted from Street Manager onto a server every two hours. Data Upload: Another script is run every two hours to upload onto an FTP server, before passing onto the Open Data Portal.

Quality Control Statement Quality Control Measures include:

Manual review and correction of data inconsistencies Use of additional verification steps to ensure accuracy in the methodology

Assurance Statement The Open Data Team and Streetworks Team worked together to ensure data accuracy and consistency.

Other Definitions of key terms related to this dataset can be found in the Open Data Portal Glossary: Open Data Portal Glossary Download dataset information: Metadata (JSON)

National Highways Historical Railways Estate Boundary maps out the land belonging to the Secretary of State for Transport that is part of the Historical Railways Estate managed by National Highways.Surplus land does not form part of this dataset.

The Historic Railways Estate boundary is derived from:

Ordnance Survey Mastermap Topography; The original railway companies’ land plans which have been marked up with historical sale information.This dataset is refreshed periodically from the datasets the HRE team works on daily.

The data will be used on the NH website for people to access and be able to see what structures are in their local area.

This dataset defines the boundaries of twelve Nature Recovery Projects forming a key part of the 25 Year Environment Plan’s commitment to deliver the Nature Recovery Network (NRN). The twelve projects included in this dataset are: East of Eden, Purple Horizons, Somerset Coast Levels and Moors, G7 Legacy, Wye Valley, Wendling Beck, Lost Wetlands, Heathland Connections, Bradford & South Pennines, Seaford to Eastbourne: Drink-in the Downs, Tees Estuary Recovering Nature (TERN), Cambridge Nature Network. The boundary for the Lost Wetlands Project has not yet been confirmed and is subject to change.The Nature Recovery Projects form a key part of the 25 Year Environment Plan’s commitment to deliver the Nature Recovery Network (NRN). They aim to follow Lawton principles to create more, bigger, better and, crucially, connected, sustained and functional wildlife-rich places. Places that counter biodiversity loss, adapt to climate change and support the needs of local communities. They will provide natural solutions to reduce carbon emissions, enhance our landscapes and cultural heritage, manage flood risk and enable  people to enjoy and connect with nature where they live, work and play – benefiting health and wellbeing. This dataset shows the location and boundaries of Nature Recovery Projects throughout England. The main outline of each one was provided by the project lead, and in some cases these were refined by following geographic or administrative boundairies as listed below: OS Open rivers (OGL), AONBs (OGL), County Boundaries (OGL), OS Open Roads (OGL), SSSIs (OGL), Environmentally Sensitive Areas (OGL), Flood Risk Zone 3 (OGL), NNRs (OGL), Marine Conservation Zone (OGL).Full metadata can be viewed on data.gov.uk.