Workers from BAE Systems in Brough are in London to protest over the planned closure of the site outside the company's AGM. They have had special t-shirts made for it.
More top news
Polls suggest immigration is the biggest issue for voters in Yorkshire and Lincolnshire ahead of the General Election in May.
Afternoon weather with Jon Mitchell
More than 100 Auschwitz survivors from at least 17 countries were expected to attend the main ceremony at the concentration camp.