BBC staff at Salford Quays are on the picket lines along with thousands of employees across the country.
Some programmes will be disrupted during the 24-hour strike over job cuts.
Around 2,000 posts are set to go under cost-saving plans.
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Breezy conditions continue for coasts & hills. Light rain developing from early Sunday morning but improving from the north through the day
Prime Minister Theresa May praised the "tremendous" work of the military as she visited Liverpool to mark Armed Forces Day.
The Prime Minister praised the armed forces as she joined celebrations in Liverpool.