BBC News
By Dominic Casciani
image captionDennis Warren, deceased, and Ricky Tomlinson: Among the 14 appellants in the case
Trade unionists attempting to overturn convictions in a 47-year-long campaign have told the Court of Appeal they were victims of an establishment plot.
The 14-strong group, including actor Ricky Tomlinson, say police destroyed evidence, and shadowy security chiefs prejudiced their trial.
The men were convicted over allegedly illegal protests during a 1972 strike.
Six of the 14 have since died, including Dennis Warren, who was jailed for three years.
Their families are continuing the cases in their names. Tomlinson, then known as Eric, was jailed for two years in the first of three trials that lasted until 1974.