Quiet increasingly embarrassed evidence destroyer? (8)
I believe the answer is:
shredder
'evidence destroyer?' is the definition.
(I've seen this before)
'quiet increasingly embarrassed' is the wordplay.
'quiet' becomes 'sh'.
'increasingly embarrassed' becomes 'redder' (I can't justify this - if you can you should give a lot more credence to this answer).
'sh'+'redder'='SHREDDER'
Can you help me to learn more?
(Other definitions for shredder that I've seen before include "Red herds (anag.)" , "Device for destroying documents" , "Destroyer of documents" , "Paper-cutter" , "security equipment" .)