[trnglina]

> Is this not what is being withdrawn?

What's being withdrawn is their original CUI, linked in the article [0]. From what I can tell, this is very distinct from their new digital service manual, which seems to be replacing the old CUI.

> ...but this would need to be either extended or abstracted to be applicable to, say, administrative systems.

Based on nothing more than a rough skim of the CUI, admittedly, it seems like the original was a very web/interface-oriented design system in the first place. A focus on web components makes sense, since administrative systems can be implemented with a web-based frontend, and web design systems can be adapted to other user interfaces, because they provide a set of baseline, expected behaviours to replicate.

[0]: https://webarchive.nationalarchives.gov.uk/20160921140920/ht...