The Stalybridge and Hyde MP, speaking exclusively to the MEN, said he had not spoken to the prime minister since his sensational resignation.
Mr Purnell stunned Westminster last Thursday when he quit his job as Work and Pensions Secretary.
The move looked set to bring down Mr Brown - but the rebellion fizzled out after other key Blairites failed to follow suit. The prime minister survived a crunch meeting of Labour MPs on Monday night after pledging to `learn from his mistakes'.
Mr Purnell's decision to stand down followed hot on the heels of similar moves by Hazel Blears, the former Communities Secretary, and Home Secretary Jacqui Smith. That sparked rumours of a planned coup to oust Mr Brown. But Mr Purnell said he had not discussed his plans with other colleagues.
"It was not a plot," he told the M.E.N.
"I was saying what I had to say to be true to myself. I was very clear that I did not want to be part of a plot. I did not want to put colleagues in a difficult position by telling them my plans.
Discussions
"Of course I had discussions with different colleagues [that week], but it was very important I did not tell them I was resigning that evening. I can't control the decisions of other people in government."
Mr Purnell said other senior 'Blairites' who did not follow his lead - including David Miliband and Andy Burnham - retained his 'full support'.
"I am not saying they did the wrong thing," he said. "I completely respect colleagues who took a different view - people with similar values and commitment to the Labour party. A friend of mine said you can't go wrong with the truth.
"It was a very personal decision. I could not go out on Friday night and say things I did not believe to be true. It is something I have struggled with for a while.
"I do not regret saying what I said, but I also intend to be loyal from the backbenches.
"I am not going to become a public critic about what the government has done wrong."
Mr Purnell admitted there was 'disagreement' in the ranks about the way forward for Labour. But he said all MPs were committed to 'doing the best thing for the party'.
He said he had discussions with the prime minister 'over the past few months' about the direction the government was taking. But he did not tell him about his decision to quit until 'a quarter to ten' on Thursday night - when the news was already breaking.
He did, however, tell the chairman and secretary of the CLP 'just before' he told Mr Brown.
"In an ideal world I would have had a party meeting but I wanted the news to come out after the polls closed," he added.
Mr Purnell's decision sparked outrage among local party members. Kevin Welsh, chief whip of the Tameside Labour Party, was 'incandescent' with rage. Coun Welsh described the move as ill-judged, self-indulgent and a massive mistake.
Mr Purnell refused to comment on whether he thought the party was in a weaker position as a result of his actions. And he declined to say whether he thought his own stellar political career had been stalled.
"This was not a political judgement," he said. "This was not about calculating different consequences. It was about telling the truth."
The MP said everyone in Labour - including the government - bore 'responsibility' for the party's dismal showing in the European Elections, where it polled just 15 per cent. But he said he 'genuinely' believed they could still win the next general election.
"The most disappointing thing about the election was the BNP getting a seat in the north west," he said. "I was keen that my decision did not come out until the polls had closed."
Mr Purnell said the reaction in his constituency had been 'great'.
"People have been stopping me in the street and shouting out of car windows," he said. "I have spoken to loads of people in the CLP and I have had very strong support. Some people have disagreed with what I did, but in a very good-natured way."
Mr Purnell said he was proud of what a Labour government had achieved for Stalybridge and Hyde - and said he intended to refocus on being an active local MP.
James Purnell MP
The most disappointing thing about the election was the BNP getting a seat in the north west
"I will be supporting the government but most of all I will be working hard in my constituency," he said. "That can get a bit lost in Cabinet and I am looking forward to seeing people face-to-face, and having coffee mornings and roving surgeries.
"There are some big things that I want to do, like seeing through the Mottram-Tintwistle by-pass, reducing over-crowding on trains, getting more of my constituents to university, and regenerating Hyde town centre.
"Even those people who have disagreed with me have said I am a good local MP."
Internet rumours that Mr Purnell had considered crossing the benches to join the opposition were dismissed as 'ludicrous'. Mr Purnell said Tory leader David Cameron was a 'clever politician' who `blew in the wind' on policy.
"When he first got elected he was going to be a 'new Labour' leader, and now he is the grandson of Margaret Thatcher," said Mr Purnell. "He is a politician who doesn't know what he believes."
The MP said the expenses scandal highlighted the need for a new era of 'open politics'.
"Politics is going to need to change," he said. "There is a gap between what people feel they need and what the reality is. We need open politics. It will be a great change - even if it is uncomfortable for politicians."
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Showing comments 1 to 25 and replies | View All
johnnyboy, Ashton-u-Lyne, Lancashire (10/06/2009 at 08:27)
Barney Gumball LLB Hons (10/06/2009 at 09:18)
nyb, ex manc (10/06/2009 at 09:27)
readersdigest (10/06/2009 at 10:06)
Readersdigest
Squire of Newton, Newton nr. Hyde (10/06/2009 at 10:31)
He was treated by his own ilk like the rest of the NuLab pack treat the electorate, with contempt, and their own selfishness ...we want to keep our noses in the trough Gordan.
wahablue (10/06/2009 at 10:39)
john davis (10/06/2009 at 10:48)
selfexiled (10/06/2009 at 10:49)
Not a Number, just down the road (10/06/2009 at 10:49)
So is he going to come and live up here full time, or is he going to carry on being an occasional visitor?
"reducing over-crowding on trains"
Is he going to be on Adonis' staff then? - because the only way he would ever be able to do anything about stock levels etc is to re-write the rail franchises; as he knows full well judging by an email he sent me eight years ago. What a silly throw away comment to make!
"Even those people who have disagreed with me have said I am a good local MP."
Bhah haaaa haaaa haaa!!!!!!! No wonder he looks fuddled in the photo if he thinks he can get away with that one! Perhaps he airbrushed it in!
Ask a few licensees, or owners of take aways, or promoters of events, what they think of Purnell's licensing law revisions whilst he was on the greasy pole - just one instance of his "prowess" in helping small businesses to thrive and prosper. He is costing a colleague of mine £25,000 p.a. for the new licensing procedures - but there is no improvement in calibre or compliance as a result - just more paper and more overheads. Typical of what this government has been about since day one.
"He is a politician who doesn't know what he believes."
Never heard that one from a politician before!
"The MP said the expenses scandal highlighted the need for a new era of 'open politics".
Well let's get the ball rolling then James - why are you claiming expenses in London as your "secondary" home and describing Broadbottom as your primary residence when everyone knows that you are a London resident first and foremost.
Either live here, and claim for there, or live there and claim for here. No other option washes.
It will need more - an awful lot more - than smooth words and a pensive look, to convince many of your constituents that you are a committed Tamesider at heart.
Joe Pub, Manchester (10/06/2009 at 11:22)
JoeStalin,Gorton (10/06/2009 at 11:31)
Much in the same way that Purnell faked that famous Photograph, this rather irritating little man must "plant" friends and family at various points "in the street" in order to encounter such a positive response from the public. MPs think all they have to do to get votes is to lecture us in how popular they are with other people. "I'm really popular, everyone thinks I'm great - vote for me". This man represents a party that took us to war on a lie and wants to monitor our emails and track our phone calls. His government are trying to force us to carry ID cards based on another set of lies about imaginary terrorist threats. Your mum might love you mate but trust me, I'm from Hyde and can't stand you!
Chapman (10/06/2009 at 11:46)
BALL AND BAT, ALL OVER (10/06/2009 at 12:31)
Blue Mart, Glossop (10/06/2009 at 12:39)
Jason Cook (10/06/2009 at 12:55)
They could ditch Trident, abandon the i.d. card scheme, abandon the planned privatisation of the Post Office - in other words stop digging the hole any deeper. They could target income tax against the wealthy, telling them the party is over for them as well as the rest of the population, and draw a line under p.f.i with the generated / saved income. They could withdraw from Afghanistan. They could propose a radical reform of parliament, the Lords and our electoral system, and give us a referendum on the LisbonTreaty. None of this is on the agenda. Instead, New Labour will continue to treat the electorate like fools, and think that spin, bluff, presentation, and downright lies will con the public into voting for them again. And they will be destroyed in around twelve months time.
Lord De Las Moscas, Piggly Wiggly Farm (10/06/2009 at 14:10)
dessie, manchester (10/06/2009 at 15:04)
mp's = money pigs all they are interested in is how much they can screw out of the taxpayers. GET RID OF THE LOT OF THEM!!!!!!!
Guten Tag, Manchester (10/06/2009 at 15:54)
RT, UK (10/06/2009 at 18:26)
Waste of time being in government then. A complete sycophantic attitude.
General Election Now - I believe the public want one, they certainly deserve one.
Andanotherthing, Mcr (10/06/2009 at 20:13)
hjk (10/06/2009 at 21:11)
Richard Dunne at City for ever please (11/06/2009 at 10:16)
And the moon IS made of green cheese, the Pope is NOT a catholic and the world is NOT round!!
It was a plot but it failed end of.
Esso Blue. G. Barry, it's a Done Deal. Next, Manchester (11/06/2009 at 17:46)
Esso Blue. G. Barry, it's a Done Deal. Next, Manchester (11/06/2009 at 17:50)
Andanotherthing, Mcr (11/06/2009 at 18:26)