One bleedin' criminal not fit to be put away (8)
I believe the answer is:
inedible
'not fit to be put away' is the definition.
I can't judge whether this definition defines the answer.
'one bleedin' criminal' is the wordplay.
'one' becomes 'i' (Roman numeral).
'criminal' indicates anagramming the letters.
'bleedin' anagrammed gives 'nedible'.
'i'+'nedible'='INEDIBLE'
Can you help me to learn more?
(Other definitions for inedible that I've seen before include "not to be swallowed" , "not course material?" , "Unpalatable" , "unfit for course!" , "Not suitable for consumption" .)