NB.  There is some debate as to whether this is a “pure” polyonom or a hybrid of some sort.

In July 2023 a fictional work “Pilkington’s Gamble” started to be compiled.  It’s premise was that the elements of a weekend-long crisis management exercise were starting to be reflected in real life.

The exercise called for a fictional new political party – called  “Put UK 1st”.  That was abbreviated and hackneyed to become “pukist”.

(Read more at https://column.eziine.com/the-untold-story-behind-the-birth-of-puk1st-the-put-uk-1st-political-party/)

Possible associated terms / derivations – pukism, pukalism, pukists.