Thanks @midas0441 I actually got this working using Clean embeds on a vault-wide basis, alternative for Naked embeds below
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For those complete newbies (like me!) to get this to work you need to:
- Copy the CSS code from the GitHub page above
- Paste it into a NotePad document (Windows)
- Save as… whateveryouwanttocallit.css
- Open Obsidian > Settings > Appearance. In the CSS Snippets - click the folder icon and move your whateveryouwanttocallit.css file into it and then enable it
- You should now have complete block references in your document
Thanks to @midas0441 for the help