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.
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.
Please note: 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.
| Epoch number | Publication date | Data cut date |
| 102 | 15 June 2023 | 22 May 2023 |
| 103 | 27 July 2023 | 26 June 2023 |
| 104 | 1 September 2023 | 7 August 2023 |
| 105 | 12 October 2023 | 8 September 2023 |
| 106 | 23 November 2023 | 20 October 2023 |
Past epoch publication dates
| Epoch number | Publication date | Data cut date |
| 101 | 12 May 2023 | 11 April 2023 |
| 100 | 30 March 2023 | 27 February 2023 |
| 99 | 16 February 2023 | 16 January 2023 |
| 98 | 6 January 2023 | 28 November 2022 |
| 97 | 17 November 2022 | 14 October 2022 |