How would you both present that information in a way that would please everyone?
As the meerkats would say - "simples"
Change first part from-
"Cancellations to services between Castle Cary and Weymouth
Due to animals on the railway between Castle Cary and Weymouth all lines are blocked.
Train services running to and from these stations will be cancelled or terminated at and started back from Yeovil Pen Mill. Disruption is expected until 12:00 02/05."
to
"Cancellations to services between Castle Cary and Weymouth
Following a train hitting several cows near Yetminster yesterday, a clean up operation is in place. Until this is complete, and we can ensure the line is not damaged, trains will be amended.
Train services running to and from these stations will be cancelled or terminated at and started back from Yeovil Pen Mill. Disruption is expected until 12:00 02/05."
Then the key information is the first thing people will read, and understand it's not just another cow on the line, that they will pass at walking pace with a farmer holding securely on a halter after a 15 minute delay, and why the line is closed without having to spool down.