Staff at the Ritzy cinema in south London walked out on Thursday of last week to join colleagues protesting outside.
The action forced the Ritzy to shift a live showing of King Lear from the National Theatre to the Clapham Picturehouse.
Strikers leafleted the new venue and the National Theatre.
Pickets were angry at a sign bosses put up saying “some of the staff” were on strike.
One said, “On the shift that’s just come out there was only one person who isn’t here with us. And that’s typical”.
Some 40 people gathered in the pouring rain. The strikers kept up a film theme by singing, “Singing in the Rain”.
Willy Donaghy from the workers’ Bectu union told Socialist Worker, “There’s been no movement from the management. We’re keeping our discipline and resolve. We’ll have a meeting tomorrow to discuss tactics.”
Workers at Curzon cinemas in London are also engaged in the fight for a living wage.
One had come to show solidarity on the picket line.
He said, “We are in the same fight. The Ritzy are ahead of us in rejecting the offer. About 75 percent of Curzon staff are in Bectu and in another two weeks we could be in the same position.
“We’re staging protests. The Ritzy are a good example for all cinema workers. We all need to support each other.”