Listed below are the latest map release dates.
OS Explorer OS 1:25,000, OS 1:25,000 HD
and
OS Landranger OS 1:50,000, OS 1:50,000 HD
1st June 2021 - about 10% updated of OS 1:25,000 SD & HD, and 30% updated of OS 1:50,000 SD & HD
1st March 2021 - about 15% updated
1st Dec 2020 - about 15% updated
1st Sept 2020 - about 15% updated
1st June 2020 - about 20% updated
1st March 2020 - about 20% updated
1st December 2019
1st Sept 2019
1st June 2019
1st March 2019
1st December 2018
1st September 2018
1st June 2018
1 March 2018
1 December 2018
OS Vector Map Local Colour
1 July 2021 - full update
1 April 2021 - full update
1 January 2021 - full update
1 October 2020 - full update
1 July 2020 - full update
1 April 2020 - 95% updated.
1 Jan 2020 - a full update
1st October 2019
1st July 2019 - approx 90% updated.
1st April 2019 - approx 90% updated.
1st January 2019 - a full update.
1st October 2018 - a full update as the OS has changed some small details in how the map is drawn.
GroundRanger
1st May 2020 - a full update.
1st April 2019
1st November 2018 - a full update.
OS Open Map Local
1st April 2020 - a full update.
1st October 2019
1st October 2018 - a full update.
OS Road Map - 1:250,000 scale
1st June 2020 - a full update.
1st June 2019
1st June 2018 - a full update.
OS GB Map - 1:1,000,000 scale
1st January 2020 - a full update.
1st January 2019 - a full update.