Worried less about one newspaper initially concealing Conservative plots (10)
I believe the answer is:
storylines
'plots' is the definition.
(storyline is a kind of plot)
'worried less about one newspaper initially concealing conservative' is the wordplay.
I cannot quite see how this works, but
'one' could be 'li' (I've seen this in other clues) and 'li' is located in the answer.
'conservative' could be 'tory' (I've seen this before) and 'tory' is found within the answer.
This may be the basis of clue (or it may be nonsense).
(Another definition for storylines that I've seen is " Plots".)