Sappers collapse denied one later showing (5)

I believe the answer is:

rerun

I'm a little stuck... Click here to teach me more about this clue!

'later showing' is the definition.
'rerun' can be an answer for 'showing' (I have seen 'Extra showing' mean 'rerun' so perhaps 'showing' could also mean 'rerun'). I am not sure about the 'later' bit.

'sappers collapse denied one' is the wordplay.
'sappers' becomes 'RE' (nickname for the Royal Engineers).
'collapse' becomes 'ruin' (I've seen this in another clue).
'denied' is a deletion indicator (the word is denied or deprived of certain letters).
'one' becomes 'i' (Roman numeral).
'ruin' with 'i' taken away is 'run'.
're'+'run'='RERUN'

Can you help me to learn more?

(Other definitions for rerun that I've seen before include "Another airing" , "Repeat of event" , "Show again on TV" , "Repeat (of race etc)" , "Film or programme broadcast again" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.