6d - No, the answer is a cryptic definition - the wicked things are what the answer supports. Think what runs through the core and out the top of what goes in the answer.
The wicked things are the things that are supported.
I share the view of those who thought this was a really good crossword. 6d and 19a are brilliant.
Thanks for the forum's help on 13d. I should have got this having seen the National Trust"S Helios last night.