Moira Stuart, who lost her regular newsreading slot earlier this year, is to leave the staff of BBC News.
Stuart began reading TV news bulletins in 1981
Stuart was left with no regular BBC slot after being axed from BBC Breakfast last year and Andrew Marr's Sunday AM programme in March.
It led to accusations of ageism, while broadcasters like John Humphrys, Jeremy Paxman and Joan Bakewell demanded she was reinstated.
The BBC said Stuart had left to work on "a wider range of projects".
'Loved and admired'
Stuart, awarded an OBE six years ago, has brought her skills to almost every news programme on the BBC since she started working at the corporation 34 years ago.
She began her broadcasting career as a continuity announcer and newsreader on Radio 4 and Radio 2 before moving into TV in 1981.
Outside news, she has been seen on Top of the Pops, the Chelsea Flower Show and family history programme Who Do You Think You Are?
Helen Boaden, director of BBC News, said: "Throughout her 30-plus years at the BBC, Moira has achieved a great deal.
"She has always been a model professional as well as being much loved and admired by both the public and her BBC colleagues.
"Everyone in BBC News wishes her all the best for the future."
Stuart's spokeswoman Sue Ayton said: "Over the last few months there have been lots of requests for Moira and now we're able to look to the future."