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AddressBase Products Epoch dates

AddressBase, AddressBase Plus and AddressBase Premium are updated every six weeks. This six week period of time is known as an Epoch.

The product is currently available as a full supply or Change Only Update (COU) each Epoch.

Epoch numberPublication date
Data cut date
6225 October 201821 September 2018
6306 December 201802 November 2018
6417 January 201914 December 2018
6528 February 201925 January 2019

Please note that future dates are provided as an indication only and are subject to change. Data cut dates are estimated; these are given to provide an indication of the last point at which changes will reach the epoch.

Past Publication Dates

Epoch numberEpoch refresh dates
6113 September 2018
6002 August 2018
5921 June 2018
5811 May 2018
5729 March 2018
5623 February 2018
5511 January 2018
5424 November 2017
5313 October 2017

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© Ordnance Survey 2018