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📅Product Refresh Dates
On this page, you'll find information about the update frequencies of our Premium and OpenData Download products and the calendar months in which these updates are published.
You'll also find tables listing the upcoming and past publication and data cut / extraction dates for our AddressBase and OS MasterMap Topography Layer products.
Premium data product update frequencies
1:25 000 Scale Colour Raster
Quarterly
March, June, September and December
1:50 000 Scale Colour Raster
Quarterly
March, June, September and December
AddressBase
Every six weeks
Variable
AddressBase Core
Weekly
Weekly publications in January, February, March, April, May, June, July, August, September, October, November and December
AddressBase Plus
Every six weeks
Variable
AddressBase Plus Islands
Every six weeks
Variable
AddressBase Premium
Every six weeks
Variable
AddressBase Premium Islands
Every six weeks
Variable
Code-Point
Quarterly
February, May, August and November
Code-Point with Polygons
Quarterly
January, April, July and October
OS Emergency Services Gazetteer
Monthly
January, February, March, April, May, June, July, August, September, October, November and December
OS Detailed Path Network
Annually
October
OS MasterMap Greenspace Layer
Bi-annually
April and October
OS MasterMap Imagery Layer
Quarterly
February, May, August and November
OS MasterMap Highways Network – Paths
Monthly
January, February, March, April, May, June, July, August, September, October, November and December
OS MasterMap Highways Network – Roads
Monthly
January, February, March, April, May, June, July, August, September, October, November and December
OS MasterMap Highways Network – Routing and Asset Management Information (RAMI)
Monthly
January, February, March, April, May, June, July, August, September, October, November and December
OS MasterMap Sites Layer
Bi-annually
April and October
OS MasterMap Topography Layer
Every six weeks
Variable
OS MasterMap Topography Layer – Building Height Attribute
Bi-annually
April and October
OS MasterMap Water Network Layer
Quarterly
January, April, July and October
OS Multi-modal Routing Network
Monthly
January, February, March, April, May, June, July, August, September, October, November and December
OS Terrain 5
Quarterly
January, April, July and October
OS VectorMap Local
Quarterly
January, April, July and October
OS VectorMap Local – colour backdrop
Quarterly
January, April, July and October
Points of Interest
Quarterly
March, June, September and December
OpenData product update frequencies
1:250 000 Scale Colour Raster
Annually
June
Boundary-Line
Bi-annually
May and October
Code-Point Open
Quarterly
February, May, August and November
GB Overview Maps
Annually
January
MiniScale
Annually
January
OS Open Built Up Areas
Every 2 years
April
OS Open Greenspace
Bi-annually
April and October
OS Open Linked Identifiers
Every six weeks
Variable
OS OpenMap – Local
Bi-annually
April and October
OS Open Names
Quarterly
January, April, July and October
OS Open Rivers
Bi-annually
April and October
OS Open Roads
Bi-annually
April and October
OS Open TOID
Every six weeks (in-line with the OS MasterMap Topography Layer releases).
Variable
OS Open UPRN
Every six weeks (in-line with the AddressBase Epoch dates)
Variable
OS Open USRN
Monthly
January, February, March, April, May, June, July, August, September, October, November and December
OS Open Zoomstack
Bi-annually
June and December
OS Terrain 50
Annually
July
OS VectorMap District
Bi-annually
May and November
AddressBase products
AddressBase, AddressBase Plus, AddressBase Premium and AddressBase Islands are updated every six weeks. This six week period of time is known as an epoch.
Our AddressBase products are currently available as a Full Supply or Change-Only Update (COU) for each epoch.
Upcoming AddressBase epoch publication and data cut dates
Future dates are provided as an indication only and are subject to change. Data cut dates are estimates; these are given to provide an indication of the last point at which changes will reach the epoch.
As we approach the publication date and prepare to release a new epoch, any new requests placed for data will be paused to ensure data integrity. These requests will be processed as soon as this pause is lifted.
Past AddressBase epoch publication and data cut dates
AddressBase product 'family' release notes (for all AddressBase products bar AddressBase Core) are available from the AddressBase Fundamentals pages of this site.
AddressBase Core is supplied weekly and its release notes can be found on the AddressBase Core Release Notes page.
OS MasterMap Topography Layer
Upcoming OS MasterMap Topography Layer publication and extraction dates
Past OS MasterMap Topography Layer publication and extraction dates
OS MasterMap Topography Layer release notes are available from the product pages of this site.
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