Good morning James Osborne,
Thanks for the feedback, but I believe you have not understood the real problem. The site appears in AMP on Google’s SERP, but not on Google News, and the problem remains.
I recorded in a short video of 20 seconds about what happens, showing the difference between when i search for the the article in Google News and the Google SERP, see: https://youtu.be/XeiDLDhcsUU
Note that the thunderbolt icon that should appear in Google News signaling that it is AMP does not appear