Probably, it appears as if the old sound recordings were retained from the original class' voice but the new sound files were inserted and were made by Ruth as she already has recorded every station name in Wales and, I'm sure, plenty in England too. It was probably easier to just insert new sound files they already had than to get Alison or whoever the original voice was to record again.
150243 still hasn't been refurbished yet. Out of the ex Wessex 150/2s, the only ones that still play the old automated announcements are 150221, 150239, 150243, 150244, 150249, 150261. The rest have either been refurbished, or don't play them for some reason (150265 & 150266). Would be quite good to know the list of full announcements these ex-wessex units can play!
I have just had a look through some old recordings and threads in the automated announcements section. It appears that they can play the following automated announcements.
"You are travelling on a Wales & Borders Alphaline train. An at seat service of light refreshments is available on this train selling selection of hot and cold drinks and snacks. The steward will be passing though the train shortly. The conductor will be checking tickets and handing you information regarding our timetables and connections. Reserved seats are indicated by the labels on the seats and the coach letters situated on the main doors. You will find the toilets and baby changing facilities situated in the centre of the train. Litter bins and luggage space is situated between seats and luggage space is also located over your head and at the ends of the coaches. Wales & Borders wish you a safe and pleasant journey."
"You are travelling on a Wales & West Alphaline train. An at seat service of light refreshments is available on this train selling selection of hot and cold drinks and snacks. The steward will be passing though the train shortly. The conductor will be checking tickets and handing you information regarding our timetables and connections. Reserved seats are indicated by the labels on the seats and the coach letters situated on the main doors. You will find the toilets and baby changing facilities situated in the centre of the train. Litter bins and luggage space is situated between seats and luggage space is also located over your head and at the ends of the coaches. Wales & West wish you a safe and pleasant journey."
"You are travelling on a Wessex Trains Alphaline train. An at seat service of light refreshments is available on this train selling selection of hot and cold drinks and snacks. The steward will be passing though the train shortly. The conductor will be checking tickets and handing you information regarding our timetables and connections. Reserved seats are indicated by the labels on the seats and the coach letters situated on the main doors. You will find the toilets and baby changing facilities situated in the centre of the train. Litter bins and luggage space is situated between seats and luggage space is also located over your head and at the ends of the coaches. Wessex Trains wish you a safe and pleasant journey."
"Welcome aboard. Please listen to the following announcement for your safety. Please familiarise yourself with the safety information provided on posters displayed in the passenger saloons. Emergency door opening procedures are indicated close to the doors. Please ensure any luggage on the overhead racks if safely stowed. And when you leave the train please mind the gap between the train and the platform and take care as you alight. Thank you."
"An at seat service of light refreshments is available on this train selling a selection of hot and cold drinks and snacks. The steward will be passing through the train shortly. Thank you."
"In the next few minutes the conductor will be carrying out a full ticket check. They would like to see all tickets passes and railcards. Thank you."
"Your attention please. So that all passengers may be seated will you please move any luggage on seats to the spaces between the seats and the overhead luggage racks. Thank you."
"Your attention please. Please make sure that your luggage placed on the overhead luggage racks is secure and will not fall. Large and heavy items should be placed in the luggage spaces between the seats and at the ends of the coaches. Thank you."
I am not sure if this is the full list. There may possibly be a few other automated announcements as well.
I remember traveling on a 180 from Great Malvern to Worcester around that time. The announcement after departing from Great Malvern was so long, we had stopped at and restarted from Malvern Link before it had finished!
The only ones which are even longer are probably the new Northern Rail onboard announcements! They go on and on and on about buying a ticket before you board / reporting suspicious bags and behaviour / keeping your personal belongings with you / dont leave anything unattended / CCTV is in operation etc!