If there's a k in 18d, I've obviously got the letters wrong. I have t?l?i?n
I guess 21a is wrong - gestures showing respect; king, on reflection, observed amount around 50. I have put a gesture of respect which has to do with getting down on one's knees. Pretty obvious what I mean, but sorry for spoiling.
Any help appreciated. Also don't understand the spoonerism, though I think I've got it.
thanks.