Over-particular for every prison, yet disorganised (10)
I believe the answer is:
pernickety
'over-particular' is the definition.
(I've seen this before)
'every prison yet disorganised' is the wordplay.
'every' becomes 'per' (I've seen this in other clues).
'prison' becomes 'nick' (slang term for prison**).
'disorganised' indicates anagramming the letters.
'yet' with letters rearranged gives 'ety'.
'per'+'nick'+'ety'='PERNICKETY'
'for' acts as a link.
(Other definitions for pernickety that I've seen before include "Fussily pedantic" , "Fussy" , "Paying too much attention to trivial details" , "Over-particular" , "Particular" .)