Any currency will inexorably fall on uncertainty and boyo have Farage/Boris and Co manufactured a grade one mess.
@ what level uncertainty is priced in , depends on the main players reactions.
eg , If France/Germany tell UK get stuffed ,uncertainty is over and £stg finds a level.
eg, If France/Germany play it too nice for too long ,uncertainty will hit £ and euro.
I just don,t see things staggering on until Tories elect a new Boss.
Indeed I hope not , as the Bard said {if it is to done , tis better it be done quickly} or something like that !