Ta for suggestion ginge. That would make the first letter of another clue into a T....
22ac/6d)Irritable gentlewoman permanently hostess to the painters, in favour of spraying bright red.[5,7]
T???H/???????
I've not got this either - also, anyone know 20 across?
What madness during trip, when parents collect their darling schoolkids in their 4x4s (4'4) - - - - - o - -