Root for Scottish independence, essentially over European pressure (4)

I believe the answer is:

neep

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'root for scottish' is the definition.
'neep' can be an answer for 'root' (I've seen this before). I'm not certain of the 'for scottish' bit.

'independence essentially over european pressure' is the wordplay.
'essentially' says to take the centre.
'over' says the letters should be written in reverse.
'european' becomes 'E' (abbreviation e.g. EU).
'pressure' becomes 'p' (scientific abbreviation).
The middle of 'independence' is 'en'.
'en' written backwards gives 'ne'.
'ne'+'e'+'p'='NEEP'

Can you help me to learn more?

(Other definitions for neep that I've seen before include "Root" , "vegetable in Scotland" , "(Scottish) turnip" , "Scots veg" , "Scots turnip" .)

I've seen this clue in The Guardian.

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