BBC journalists have begun a 24-hour strike in protest at compulsory redundancies, causing possible disruption to the broadcaster's television and radio output.
Members of the National Union of Journalists (NUJ) walked out at midnight local time over job cuts which are expected to affect BBC Scotland, Five Live, the Asian Network and the World Service.
NUJ general secretary Michelle Stanistreet explained: "NUJ members across the BBC are taking action to defend jobs and quality journalism at the corporation.
"They are angry and frustrated at the poor decisions being taken at the top of the BBC - decisions that are leading to journalists being forced out of their jobs and quality journalism and programming compromised."
A BBC spokesperson said the organisation understood "how frustrating and difficult situations involving redundancies can be," but said it was disappointed by the walkout.
"We are working hard to ensure that we succeed in getting staff redeployed wherever we can and will continue to work with the unions to ensure that their members receive the right redeployment support," added the spokesperson.
The NUJ said 7000 jobs had been lost at the BBC since 2004 and it is demanding a six-month moratorium in redundancies.