Tees does sometimes test us to the limits (all right, he did here for me with 16dn, although that was just my fault) but in this enjoyable crossword, with clues that are all so far as I can see good and interesting despite my misgivings about 24dn, he has been fairly gentle to us.
The simple theme uses the unches at the top and bottom and near the sides. In these types of Nina we usually see the unches at the very left and right, not as here, but perhaps it’s easier to fill a more conventional grid.
Definitions underlined