Southeastern use an automated announcement system at most of their stations that uses the "x, this is x." announcement.
For instance: "Hastings. This is Hastings. The train now standing at platform 3 is the 15:36 Southern service to Ashford International. Calling at Winchelsea..."
However sometimes it is used to notify passengers of points of interest or changing points at that station for example:
"Strood, this is Strood. Alight here for Medway Valley line services."
"Rochester, this is Rochester. Alight here for Rochester Castle and Cathedral"
"Beckenham Junction, this is Beckenham Junction. Alight here for the Croydon Tramlink."
"Bromley South, this is Bromley South. Alight here for the Glades shopping centre."
I think they repeat things to emphasise them. I certainly remember hearing:
"Ashford, this is Ashford. The train now in platform 1 terminates here. All change please, all change"
plenty of times.
