Yes, nice puzzle but I am having trouble parsing 9a, Weed with shoot and bit of leaf (7, hyphened). I make it (4-3) but no sign of such a weed in TCD. Am I going down a blind alley?
Also, 18a: One fifth of journos worry about columns (5). I am pretty sure the definition is columns and what should go in the light, but cannot make head or tail of the clue.
Thanks in advance to anyone who can enlighten me.