OS Mastermap Aerial Sections

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Ordnance Survey Aerial GIS Tiles — OS Imagery Data | © Crown copyright and database rights 2025 OS AC0000848283

Ordnance Survey OS Mastermap Imagery - GB Coverage

OS MasterMap Imagery Layer (Aerial) Sections/Data Chunks - Overview

On this page, we offer smaller sections than the standard OS Aerial Tile supply of 1km x 1km tiles, ideal for users seeking more compact portions of Aerial data for their project.

OS MasterMap Imagery Layer uses the same source imagery that underpins Ordnance Surveys large-scale data updates. Their processing software produces true-orthorectified imagery, removing building lean from aerial imagery to give you a consistent top-down view. Ideal for:

Risk Management
Site Planning
Property Development
Asset Management
Agricultural Services
Environmental Monitoring
Placing behind OS Mastermap Topographical Layer
Unlimited outputting (eg PDFs) from GIS of any scale within the selected licence term

NOTE: Alternative OS Aerial products if you don't use GIS:

Alternative Products:

Highlights:

up to 4km x 4km
Georeferencing world file included
Intersecting XML file/s with relevant file included - Nominal Flying Height & Date Flown
Flattened raster image
No bounding info (eg grid)
Full colour
Best viewed at a scale between 1:1250 to 1:10,000
Great for all GIS setups
Optional OS Mastermap base mapping to match your aerial selection

For larger areas:

OS Imagery Aerial Tile Sample

Downloadable Samples

Important documents:

Product:	Ordnance Survey - Aerial Photography Chunks - OS MasterMap Imagery Layer
Base Mapping	OS MasterMap Imagery - OS Aerial Photography Chunks
Scale	1:1250 to 1:10,000
Sizes	From 100m x 100m to 4km x 4km (rotation option available) For larger areas select 5km x 5km tiles Click here:
Coverage	Full Great Britain coverage (sorry this excludes Northern Ireland - try OSNI)
Format	GeoTIFF - GeoReferenced - Colour - with World File and .xml
Software Required	Geographic Information System (GIS) or a Graphics package (eg Photoshop)
Product Price	From £25.94 + vat
Perpetual Licence	A perpetual licence is also now available - please email for more info
Delivery Method	Email
Turnaround Time	Email: Target time of 30 mins (7 days a week 7am to 11pm) - Larger files may take longer to generate
Currency	Current - Latest available direct from Ordnance Survey
Samples	Click here to download a test Tif sample (along with a world and xml file) \| GeoTiff - ZIP
Key Features	Flattened image \| Georeferenced \| No bounding info (eg grid) \| supplied with a world file (.tfw)
Uses	Designed for use with GIS software. This format is used by GIS Professionals and works within all GIS Systems. Ordnance Survey imagery is captured to an absolute accuracy of 1.1m RMSE.
Number of Printouts	Unlimited outputs from GIS within the selected licence term and a licence number will be supplied
Alternative Aerial Products	OS 1:1250 PDF or JPG basic extracts OS 1:2500 PDF or JPG basic extracts
Licence Term	Please go to the Licence tab below

Item	Permitted	Alternative Product / Notes
Digital submission to any online planning portal		Create as many outputs/scales as required - e.g. 1:2500 or 1:1250
Add basic content to this Product -i.e. outline a property in red for purposes of planning permission.		Within a GIS setup
GIS Use		Georeferencing file also supplied (world file)
Ready for CAD		OS Mastermap GIS \| CAD Data \| DWG or DXF
Printing Extra Copies		Unlimited outputs/scales from your software within the licence term
Permit your Contractors to use the purchased Licensed Data		Contractor Form Below - Best Practice: Make sure you select the relevant number of users/terminals if using a contractor before purchase

Frequently Asked Questions

What are OS MasterMap Aerial GIS Sections?

They are high-resolution, true-orthorectified aerial photography clipped to custom GIS-ready sections (100m × 100m up to 4 km × 4km), aligned precisely with the OS MasterMap Imagery Layer. Included in GeoTIFF format, complete with world files and XML metadata, ready for any GIS system

Which GIS formats are available?

OS MasterMap Aerial GIS are supplied as GeoTIFF tiles, each with an accompanying .tfw world file and XML metadata. These are fully georeferenced and ready to integrate into all major GIS platforms .

What are typical tile sizes

You can order custom sections from 100 m up to 4 km square. Imagery has a 25 cm ground resolution and has accuracy of ~1.1 m RMSE—ideal for mapping scales between 1:1250 and 1:10000

What is the usual delivery time?

Digital delivery is via email, typically within 30 minutes during operational hours (7 am–11 pm, daily), though larger areas may take longer

Can I overlay these aerial tiles with vector data?

Absolutely — these raster tiles are designed to seamlessly overlay OS MasterMap vector layers (Topography or CAD) in GIS or CAD environments like QGIS, ArcGIS, AutoCAD, and MicroStation

What are common use cases?

Ideal for risk management, asset monitoring, site planning, environmental analysis, agriculture, property development, and as a backdrop to vector mapping.

Is the imagery georeferenced and OS-licensed?

Yes — it includes georeferenced TIFFs, world files, and XML metadata. Delivered fully licensed under UK Map Centre’s OS agreement. Licencing information is included on the delivery e-mail

What coverage area is available?

Coverage spans all Great Britain (excluding Northern Ireland). You can clip custom sections anywhere, from small sites to large multi-kilometre areas

What is the starting price and licence term?

Sections start from £25.94 + VAT for 125m x 125m ground coverage and will increase with the size of the area selected and licence term selected (1, 2, 3 year or Perpetual)

Get Licenced Map Tiles, Fast. Order your OS Mastermap Aerial Sections from UK Map Centre.