GBPUSD short triggered based on Politics, Fibs, Resistance

GU short in play.

Several Brexit ministers just resigned.
PM May's future is in serious trouble, per many in the know.
Brexit Blues just might make a come back here soon.

So this a scalp to start, looking for the 4.25 extension of initial move down from the news.
The 4.25 extension also aligns with previously established Fib Zone (grey).
So my first TP will be just short of the zone and the 4.25.

Depending on how things progress (assuming towards TP) I might let some ride for a longer downturn if Political uncertainly in UK remains or increases.