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.
More top news
Detectives have released CCTV footage of the moment a machete wielding thug wearing a mask jumped over the counter at a bookmakers.
A cold wind. A strong wind. Icy and wintry into the weekend
Falling temperatures & further showers from Friday evening means icy stretches are likely to form on untreated surfaces