Labour, Tories and the LibDems disagreed with the former Prime Minister and said the case for independence is weaker now than ever before.
Mr Blair plans to say that the current government is abusing the mantle of patriotism, and that Remainers do not want to stay in the European Union because they are unpatriotic, but because they believe it is best for the UK.
He will say he wants to "build support for finding a way out from the present rush over the cliff's edge".
"I want to be explicit".
Translation: "The British people were deceived about Brexit". I accept right now there is no widespread appetite to re-think. As they become clear, it is their right to change their mind.
Tony Blair is to announce his "mission" to persuade Britons' to "rise up" and change their minds on Brexit. "What was unfortunately only dim in our sight before the referendum is now in plain sight".
Well, many in and outside Britain welcome the prospect of maintaining the United Kingdom as a nation tolerant and open, which can hardly be achieved with the inwardly looking, insular Brexit movement and its starkly anti-immigrant agenda. "And, as we know more of the costs, is the pain worth the gain?" I hope that we can continue to work together with our worldwide partners to shape a global economy that truly works for everyone, including through our shared commitment to tackling climate change, and making sure our scientists are able to continue to work together on the research that helps to shape our future.
We do not argue for Britain in Europe because we are citizens of nowhere.
Theresa May stressed the importance of an early deal on European Union citizens' rights after Brexit during talks with French prime minister Bernard Cazeneuve at Number 10. When people realised, contrary to what they were told, that Saddam Hussein had no weapons of mass destruction.
The Libdems said the former Prime Minister is wrong.
"They will say they don't represent the will of the people".
Several British politicians quickly announced their disagreement with Blair's comments.
Senior Conservative leader Iain Duncan Smith called Blair "arrogant" and his intervention "nonsense", while Downing Street insisted the government was absolutely committed to deliver Brexit as decided in the June 23, 2016 referendum. Former U.K. Independence Party leader Nigel Farage referred to Blair as "yesterday's man".
Berkshire Hathaway Discloses Increased Stake in Apple
Apple shares have climbed 42 percent in the last 12 months and notched a new all-time record of US$133.29 on Tuesday. Goldman Sachs raised its 12-month price target to $150 from $133 for Apple , accompanied with a "buy" rating.