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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
521 September 2017
5313 October 2017
5424 November 2017

Past Publication Dates

Epoch numberEpoch refresh dates
5120 July 2017
508 June 2017
4927 April 2017
4816 March 2017

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© Ordnance Survey 2016