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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 numberEpoch refresh dates
5511 January 2018
5623 February 2018
5729 March 2018

Please note that future dates are provided as an indication only and are subject to change.

Past Publication Dates

Epoch numberEpoch refresh dates
5424 November 2017
5313 October 2017
521 September 2017
5120 July 2017
508 June 2017

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© Ordnance Survey 2016