Peugeot staff will stage a protest outside a dealership in Brent Cross, London, today over plans to move production jobs to Slovakia.
About 2,300 jobs will be lost at Peugeot's Ryton plant in Coventry if the plans to move production to eastern Europe go ahead.
Today's march has been organised by the Transport and General Workers' Union (T&G) who are urging Londoners to boycott Peugeot cars. They have written an open letter to all Londoners calling on them to think about how "Peugeot-Citroen has treated its workers in the UK so shamefully".
Jim O'Boyle from T&G said: "We look forward to spreading our message to the rest of the UK that Peugeot workers are not just going to lay down and accept the sacking of 2,300 workers.
"If Peugeot-Citroen believe they can just leave the UK without any consequences for their market share I have a message for them - we are not going away."
The union has drawn up plans to avoid the closure of the plant and claims it will continue its boycott campaign until the car maker is prepared to discuss their alternative.