My god, that voice is absolutely hideous. Very disjointed and without proper emphasis on the correct words.
Also, Julie Berry's coach number announcement seems to be cut, as she says "coach number x of 8" instead of "This is coach number x of 8"
It actually sounds surprisingly better than the present GWR announcements - with the 387s announcing "This is the GWR service to xxx. The next station is xxx" than the far long winded "Welcome Abord this Great Western Railway Service to Reading We will be calling at xxx"
My reckoning is that it's down to the way the Bombardier PA system is set up - allowing these type of announcements, than what seems to be the long winded and often garbled stuff the Train FX seems to churn out.
Julie Berrys chopped off announcement does seem odd though! It reminds me a little of the Croydon Trams with 2 voices for their announcements. I can only presume Julie Berry is a stock standard for those trains.