Richard's long overdue visit to recently-widowed Ken results in him realising that his dad may need a bit more full time help than he'd realised. Not that Ken would agree, but that statement is pretty much true about anything. Ken is an eccentric, strong-willed technophobe who is very much set in his ways, leaving Richard to worry about his dad growing old.
Sorry, no info about the next episode of Only Child is available yet.
The TV show is either in vacation or waiting to start their new season. When information about future episodes becomes available, it will be posted here.