I would put each inline picture in a separate paragraph whose Line Spacing is set to "Single." You can create a specific style for that purpose.

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Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional

Thanks for all the replies.

It was a combination of all of the above. I just stripped back all the manual edits, set the right compatibility options, then applied our styles.

Sorry re: cross-posting. Didn't have much luck at Technet.

PS: Does anyone know if it's possible to automate changing 'Lay out this document as if created in:' option?

These documents are set to Word 2003, and if I capture changing it in a macro to Word 2010, the macro captures just the ones that changing it to Word 2010 sets.

It leaves all the ones from 2003 checked too, so end up in Custom mode!