Trunk liner removed (4 torx screws and pop fasteners), trunk lid red warning light disconnected, trunk lock barrel removed, adjacent long/large retaining bolt (silver) removed.
It's all a bit blind, the trunk handle has pop clips as do the number plate lights, the latter seem captive, snapping into place rather than out (i.e. they'll push forwards a bit but pulling them back towards the trunk locks them in place. So none of those seem to remove in the way I hoped.
The plastic trim seems unmoved, but I think the number plate lights and trunk handle need to come off or out?
If anyone has found any pictures or YT videos then a pointer would be useful. I'll start searching....