Yes, extremely straightforward. Although I needed Google to get the second word of 10.
Still lots of fun, thanks to Pangakupu. As an indication, my long COD list (in rough order of preference) was 22, 8, 17, 23, 14, 17, 15, 16, 3, 21, 27, 13. Cluing excellent IMO, with 24 perhaps the only weak point.
FOI 1a, LOI 19.
Some clue/solution coincidences!
COD 22, although the solution is extremely similar to my COD from Imogen's Prize of 2 weeks ago.
4d has appeared in strangely many puzzles of late.
17 is in this week's Private Eye.
I don't know any Maori and rarely spot P's Ninas, so defer to buzzybee in that department.