Caporegime
Insurance will right that off then welcome to your new premium
Its "write". They are insurance underwriters.
It may well get written off if it goes through insurance, but that might not be such a bad thing. You could then have the UK's best looked after CAT N Fiesta, and potentially a few K in your back pocket after buying back the salvage and having it repaired on the cheap.
That being said, its not a dead cert that it will be written off. I'd say it could go either way. And insurance prices don't suddenly triple when you are involved in a non fault accident. Don't be such a pessimist.