Hello
The resolution of the grid references that are available via the NBN Gateway are dependent on 2 factors, the resolution the grid references were loaded onto the NBN Gateway, as supplied by the organisation, and the resolution that you as a registered user / public user have access to do. Under each map / site report there will be a list of datasets, and organisations that have contributed to that map / site report. Along side each are 2 columns
1.Dataset Resolution: Gives the highest grid reference resolution the dataset was supplied at
2.Your Resolution: Gives the resolution that you have access to
For example if the dataset was supplied at full resolution (6 figure - 100m) but you only have 10km resolution access then all the grid references will be shown at 10km. In this case you may apply to the organisation for better access to the dataset directly through the NBN Gateway (as long as you have logged in - click on the link to the appropriate dataset and then click on apply for better access link on the dataset metadata page), as well as contact the organisation directly as Charles suggests
Best wishes
Graham French
NBN Technical Liaison Officer