Vanessa Redgrave is set to appear on the British Tv period drama she narrates for the first time.

The veteran actress plays mature nurse Jennifer Worth in Bbc show Call The Midwife - but she's never seen on camera.

That will change when she appears in this year's (14) Christmas episode.

The popular programme centres around a group of London midwives, and is based on late writer Jennifer Worth's memoirs.

Show producer Pippa Harris tells the Bbc, "We're delighted to be welcoming Vanessa Redgrave on screen, having hugely enjoyed her narration of the series to date."