Ricky Tomlinson has handed in a 100,000 signature petition to Downing Street, calling for the quashing of his 40-year-old conviction over a builders' strike.
Tomlinson was among a number of former pickets, convicted over their actions during the dispute in the early 1970s.
They want their names cleared, after being found guilty in what they believe was a politically-motivated and unjustified prosecution.
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Cold into Sunday but many places staying dry
They joined a national campaign to tell supporters to show coronavirus the red card.
Famous buildings and structures, including Blackpool Tower and Old Trafford in Manchester, will go dark between 8.30pm and 9.30pm.