Flichtens was also suggested. I wondered about FLIGHTERS (maybe setter meant PLANE not plant, but there seems to be no such word (although I recall I did get some hits for a playstation battle game when I typed Flighters Plant into google)
Just had a call from Sunday Express. The clue for 28 Across should be the clue for 27 Across and 28 Across is now: This false deviant is disbelieving. Haven't solved them yet. Thought I'd get the info out first