2-4/Be have HD DOG's during shows broadcast in HD. SD doesn't.
However, if you subscribe to ITV Hub+ on Amazon Channels, they use what appears to be downconverted feeds without the HD DOG in 720p for the live channels. (Sky also use the downcoverted feeds used for the linear SD channels for NOW TV's 720p live channels).
Do they all show the 'Subtitles' and/or 'AD' tags like ITV?
In a word, yes.
I thought so.
AlexEdohHD13, Fan of BBC, ITV, and Channel 4 Programmes.