"Mum" writer Stefan Golaszewski says the series has reached its natural conclusion.
the popular BBC Two comedy drama will come to an end with its third and final season, and the programme's creator has explained how he never intended for it to have a long run.
He told Digital Spy: "The story's finished. It's a bit like [predecessor] "Him & Her", really [which wrapped after four series].
"I set off with an idea of where these characters were going at the start, and the journey that they should go on.
"So once that journey comes to its natural conclusion, the story's finished. I mean, you could carry it on, I suppose, but you'd be doing it for all the wrong reasons."
The show tells the story of widowed Cathy (Lesley Manville), her family and will they/won't they romance with family friend Michael (Peter Mullan), with the final series set to wrap up the arc.
With a fitting conclusion on the horizon, fans are wondering what's next for Stefan, but the writer wants to take his time before settling on his next project.
He explained: "What I need to do is sit and have a think, and give my brain a bath, and have a think about what story I want to tell. And then, from there, will rise... something, whether it's a sitcom or a drama or whatever.
"But I don't want to make that decision too hastily, because I think that will affect the quality of the work.
"It's really tempting financially to try to get something off the ground straight away. But that isn't really what drives me."
"Mum" returns to BBC Two tonight (15.05.19) at 10pm, while the entire final series will be available on iPlayer from 10.30pm.