By Christopher Hope/The Telegraph
The strikes will be the biggest since 1926, The Daily Telegraph can disclose.
Rolling strikes are planned, running through spring and into summer 2012, threatening to disrupt the Queen’s Diamond Jubilee and the London Olympics.
In a series of speeches to delegates at the TUC’s annual conference in London, union leaders lined up to criticise Government plans to force public sector workers to work longer and pay more for their pensions.