Law:
Qualities:
-Excellent analytical ability
-Demonstrated written and verbal expression
-Patience
-Excellent observation skills
-Confidence
-Ability to back statements up with authorative sources
-Excellent research skills
-Organisation
-Interpretation skills
Subjects
-English (Demonstrated written and verbal expression,Interpretation skills )
-History (Excellent analytical ability, Ability to back statements up with authorative sources,-Excellent observation skills)
NOTE: Legal Studies is not required, although it may help you understand the wider socioeconomic factors which relate to creation of certain laws. etc.
These are probably very narrow subject choices. I'm sure there are other deserving subjects as well.