Union leaders said they were "overwhelmed" by support after a strike by public sector workers caused widespread disruption.
David Cameron, Michael Gove and other Government figures depicted in a variety of unflattering manners by striking public sector workers.
Hundreds of schools are to close tomorrow as teachers join strike action. Find out what schools in your area are affected.
Thousands of public sector workers from across the North East are taking part in a 24-hour strike today.
Like the last strike of this scale, it means hundreds of our schools will be closed or partially closed. The industrial action also affects town halls, libraries, Sure Start centres and many other council-run facilities.
The action is part of an ongoing dispute over pay, pensions and working conditions.
Nik Jones, from Wolsingham School and Community College in County Durham, is one of thousands of members of the National Union of Teachers taking part in the walkout. "It's largely about the conditions for me", he said.
Striking workers want their employers to enter back into negotiations over their "measly" pay rises with unions, a GMB representative told Good Morning Britain.
Regional Representative Joe Morgan was also critical of proposed changes to the number of votes needed before a strike could be held, saying if the same rules were applied to Parliament, "you wouldn't have one MP elected across the country."
The Government is set to be hit by the biggest strike over pay since it came to power when over a million public sector workers walk out in a bitter dispute.
Teachers, firefighters, civil servants and transport workers are among the workers downing tools and joining the picket lines over pay, pensions, jobs and spending cuts.
Trade union Unison will stage an early morning demonstration outside Parliament, one of hundreds of events across the country to mark the 24-hour walkout.
Michael Gove is urging teachers to reconsider taking part in a national strike on Thursday.
The Education Secretary is set to say those taking part in the walkout are putting their own pay and pensions ahead of children's education.
In a speech to the Education Reform Summit in central London, Mr Gove is expected to stress that the Government's educational reforms are necessary, and that "our status quo" has not been good enough.
"We can't and we mustn't keep going backwards - and failing the poorest above all," he is due to say.
A million public sector workers have been called out on strike tomorrow - in England, Wales and Northern Ireland.
Teachers, council workers, firefighters and NHS staff are among those who are angry about pay and pensions.
ITV News Political Correspondent Carl Dinnen has more.
An ITV News/ComRes poll has found that the majority (59%) of public sector workers believe they are right to take industrial action, with less than a quarter (23%) disagreeing with them.
However, there is less support among private sector workers: 42% think that their public sector counterparts are wrong to go on strike compared to 37% who think that they are right to.
ComRes interviewed 2,053 adults online between 4th and 6th July 2014.
The British public is divided about this week's public sector strike action, a poll conducted for ITV News by ComRes has found.
In the poll of 2,053 adults, results were split with as many people saying workers are right to go on strike (40%) as they are wrong to do so (41%).
Much of the opposition to the strikes comes from older Britons aged 65 and older, with 65% of those polled in that age range saying workers were wrong to take industrial action.
Over a million public sector workers are set to take industrial action against the government in a series of rows over pay, pensions, jobs, conditions and spending cuts, according to union figures.
Local government and school staff members of Unite, Unison and GMB in England, Wales and Northern Ireland are taking strike action tomorrow over this year's pay offer.
Other groups involved in the action tomorrow are involved in long-running disputes with the coalition over a series of issues including pensions and privatisation.
Most workers salaries are stretched so thin they "are not feeling the recovery in their pockets" because they have had below inflation pay rises for the last four years, a union chief told Good Morning Britain.
Assistant General Secretary of the TUC, Paul Nowak was optimistic about public support for Thursday's strike over public sector pay, and said: "We believe Britain needs a pay rise - and that applies whether you work in the private or the public sector."