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The memo, which the Mail on Sunday gazette reported was written through Blair to colleagues last year, sees the former prime minister accuse Brown's body of executive officers of "a lamentable confusion of tactics and tactics" and of failing to make one’s self acquainted with lessons.

Written in the aftermath of Brown's decision not call an seasonably selection that might regard consolidated his supremacy, the dispatch says poor decision-making has made Conservative leader David Cameron look substantial and a viable choice for office.

"The real problem was not the brilliance of the Tory conference, but the hubris and vacuity of our own. This meant the Tories, by having something to say on policy, appeared cogent and to represent the future," Blair wrote.

"There has been a to be lamented confusion of tactics and strategy.

"At present, there is each indication that the lessons will not be learnt."

Blair's office would not confirm or deny that he had written the memo.

"Tony Blair continues to be 100 percent supportive of Gordon Brown and the government," a spokesman said.

Blair sent a watered-down version of the memo to Brown, the paper said. It is not known how that was received.

Since the memo was written, things have single got worse with a view to Brown, whose poll ratings now make him the second most obnoxious morning minister in modern British narration.

There is widespread communication among Labour members of parliament of a potential challenge to Brown's leadership allowing that he cannot regain the confidence of the party after the summer break.

Foreign Secretary David Miliband wrote each opinion piece in a newspaper last week laying out some of Labour's failings, a move interpreted in the media as preparing the ground for a possible challenge.

Brown succeeded Blair in June last year behind spending 10 years as science pastor, tarrying to assume the prime ministership. A series of blunders and perceived policy mistakes has seen his popularity fall to just 15 percent.

After Brown took employment, he sought to distance himself in several key respects from Blair. Blair aphorism that as a mistake.

"The choice is and was always between GB (Gordon Brown) running as the change aspirant or as uninterrupted continuance NL (New Labour)," he wrote.

"By trying to be change, he played exactly the same game the media wanted but never the game that gives us the only chance of a 4th boundary (in office)."

(Reporting by Luke Baker; Editing by Giles Elgood)