Brexitophobia 

1) Someone who hates the 29th of March.
2) Someone who hates British politics.

I always hate it when ‘Party Political Broadcats’ come On. I think I have Brexitophobia.

Brexitophobia by JAFPL_17 February 17, 2019

brexiphobia 

Complete anxiety in regards to the discussion or ability to make a choice regardless of party background.
By Simon. J. Redman

I am suffering from a mild case of brexiphobia.

brexiphobia by Simon J Redman November 14, 2019