BBC Breakfast host Sian Williams is set to return to Radio 4 as co-presenter of the revamped and extended magazine programme Saturday Live.
Williams will leave Breakfast in March when the show relocates to the corporation's new northern headquarters in Salford, and become part of Saturday Live’s team from Saturday 5 May.
In addition to the new Radio 4 job, Williams will continue to appear on TV, presenting BBC One news bulletins and co-hosting the channel’s Olympic coverage after her tenure on Breakfast comes to an end.
Williams, who worked as a senior Radio 4 producer for seven years before moving to television, said in a statement: "I'm thrilled to be coming home to Radio 4. I spent many happy years as a producer here and have enjoyed presenting programmes on the network too.
"The opportunity to host Saturday Live with Reverend Richard Coles is too good to miss. It's a warm and witty way to start the weekend and I can't wait to be a part of the new team."
Radio 4's Controller, Gwyneth Williams, said: "I am delighted to have Sian back on Radio 4 and I can't wait to hear her hosting the programme with Richard. She brings her own unique brand of charm and experience, formidable interviewing skills and we are lucky to have her.
“She is someone I know the Radio 4 audience will take to their hearts."
Saturday Live's slot will be extended from an hour to 90 minutes later in the year and will also see John McCarthy and Sandi Toksvig join the programme.