Three points I don't think I've seen mentioned:
I said that there was significance in the reporter being from Daventry: a familiar (to the guests), unassuming, "little-England" town. In contrast, Narvik is on the north Norwegian coast and the events unfolding there would feel distant and unthreatening to the guests, further adding to their apathy towards world events.
I also said that the cold meat on the table could be an allusion to the cold bodies on the battlefield, the link made by the repetition of "cold" for mutton and lead. This hints the poet is trying to convey that the guests should be concerned with the Second World War blah blah blah.
The structure and rhythm of the poem wildly contrasts between the first and third stanza of the poem: the first has a loose structure and rhythm (the lines beginning halfway across the page, etc.), easing the reader into a "false sense of security" and giving the poem a melodic tone, whilst the third has a more structured pattern, emphasising its grave tone.
And probably some other stuff. I loved the poem though, there's some stuff that it seems I missed out on, but I wrote 6 sides so I hope it's not deemed insufficient.