Find defence group has insurance (7)
I believe the answer is:
uncover
'find' is the definition.
(thesaurus)
'defence group has insurance' is the wordplay.
'defence group' becomes 'un' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'has' means one lot of letters go next to another.
'insurance' becomes 'cover' (I've seen this before).
'un'+'cover'='UNCOVER'
Can you help me to learn more?
(Other definitions for uncover that I've seen before include "Strip off" , "Make visible" , "Reveal - take top off" , "Take the lid off" , "Expose, reveal" .)