In its heyday it was widely regarded as the flagship of BBC TV current affairs, a daily, in-depth look behind the news headlines. These days it's basically a late-night talk show covering the news of the day.

After more than 40 years on air, staff fear the show could be shut down by the end of next year as the corporation shifts focus to its streaming service iPlayer.

In its heyday it was widely regarded as the flagship of BBC TV current affairs, a daily, in-depth look behind the news headlines. These days it's basically a late-night talk show…