Ex-workers from the Ford‑Visteon car parts company were to march to parliament this week.
It marks a year since the company sacked workers with no notice and no redundancy pay.
This sparked occupations that forced huge concessions, including redundancy payouts.
But the workers continue to campaign for pension justice.
The demonstration leaves the Unite union offices in London, on Theobald’s Road, Holborn, at 12 noon.
The protest will be boosted by news of Visteon workers’ victory over pay in France.
After four days of strikes the company caved in last week, agreeing to a 4.9 percent pay rise and bonus increases.
The bosses’ original offer was just 2.1 percent.
It is believed that the crucial factor was the strikes blocking the production of parts for the Renault Scenic.