"and the total cost will be about £100m loss of profit. I wonder if that will affect his bonus?"
You can bet that any "profit improving" (IE cost cutting) ideas certainly did.
This should as well.
But probably won't, given this is the "New World Order" of large corporate management that takes ownership of any success and avoids any possibility that their decisions could have anything to do with this.
If you wonder who is most modern CEO's role model for corporate behavior it's simple.
Carter Burke in Aliens.