Hi, Welcome to OpenStreetMap.

The source you state looks to be, (at least in part), copyright material, UK MOD Crown Copyright 2023. Please be aware that unless you have express permission to use this material to add to the OSM database, it would be considered a copyright infringement. Please see towards the bottom of this page:- https://www.openstreetmap.org/copyright

In this regard, it might be best to revert this whole changeset, so that no infringement can be claimed against OSM. You can then add back the features you know of, that are not gleaned from copyright material.

Regards Bernard.