Leader in Sun , Farage: "Our NHS needs Reform". Such a divisive character! (5,8)

I believe the answer is:

sarah ferguson

I'm a little stuck... Click here to teach me more about this clue!

'a divisive character' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'leader in sun farage our nhs needs reform' is the wordplay.
'leader in' says to take the initial letters.
'needs reform' indicates an anagram (I've seen 'needing reform' mean this).
The initial letter of 'sun' is 's'.
'farage'+'our'+'nhs'='farageournhs'
'farageournhs' with letters rearranged gives 'arahferguson'.
's'+'arahferguson'='SARAH FERGUSON'

'such' is the link.

Can you help me to learn more?

Want a hint initially instead of a full solution? Install my app