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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
508 June 2017
5120 July 2017
521 September 2017

Past Publication Dates

Epoch numberEpoch refresh dates
4927 April 2017
4816 March 2017
472 February 2017
4622 December 2016

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© Ordnance Survey 2016