"I don't think there's any chance of the government being able to persuade Parliament that Britain should leave the convention," Andrew Mitchell says.

That said, he doesn't want foreign courts to "frustrate" British justice as, he says, has been done in the past. "But equally the convention on human rights... is a very different matter", adding that Russian President Vladimir Putin would probably be "most pleased".

Asked about his thoughts on the government's plans for a British Bill of Rights to replace the Human Rights Act, Andrew Mitchell says if he had been told 30 years ago that a British government, "let alone a Conservative government', would seek to withdraw from the European Convention on Human Rights "I would have thought you were joking".

He says he doesn't want his constituents to "lose the protection of that convention", adding: "So a way has to be found to maintain Britain's support for the convention and not diminish the rights of my constituents. Maybe that can be done but I think it's very hard to do."

Andrew Mitchell, former government chief whip and international development secretary, says the debate in Britain between individual liberty and collective security has been put into "sharp focus" by David Anderson's report on surveillance powers.

Mr Mitchell says the report's recommendation that judges, not ministers, should authorise requests to intercept communications "needs to be talked through carefully" before a decision is taken. Pressed to say how he would vote, he says he would "probably" back judicial oversight, but says he wants to read the report in full first.

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Asked what the Conservative Party will do if the UK narrowly votes to remain in the EU, Owen Paterson says he doesn't want to deal with hypothetical questions.

He says the current position with the EU is "untenable", before running through his criticisms of the 28-state bloc, advocating a trading relationship instead.

David Cameron has been very "canny" by not outlining the detail of his EU reforms, adding: "And we should back him. "

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What if the government doesn't change its mind? Owen Paterson says there are amendments down to change the bill to reinstate the purdah period and adds that it's up to other parties whether they choose to back them or not.

The former environment secretary says he doesn't want to inflict a defeat on the government over the issue, hoping the government will withdraw its plans.

"Please, we do not need a row about this."

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Owen Paterson, a former Conservative cabinet minister, is now on the show. He's one of the members of the Conservatives for Britain group of 50 Tory MPs who say they will vote to leave the EU unless David Cameron secures far-reaching changes to the UK's relationship with Europe.

He says it is "unacceptable" for the government to ban the purdah period in the run-up to the referendum vote, during which there are restrictions on government announcements, saying it will "skew" the whole referendum in favour of an "in" - or Yes - vote.

The public will detect the vote is being "rigged", he says, before issuing a plea to the government to change its mind, warning that vote will be seen as"illegitimate" otherwise.

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On future airport expansion, Tessa Jowell says it's right to wait for publication of the Davies Commission on whether Gatwick or Heathrow should expand, but adds that the government should then act on it immediately. 

She says she has already voted in the Labour cabinet for Heathrow expansion but restates the need to wait until the report is published.

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Asked about the government's planned benefit cap, which will be reduced from £26,000 to £23,000, Tessa Jowell says she's in favour of it, but adds that it raises problems for London because of "affordability".

"That's why I'm campaigning so hard to introduce a higher London minimum wage," she adds.

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Tessa Jowell says that if Labour cannot win in the 2016 London mayor elections, it will not have won a big election in 15 years. "That is really serious," she says, adding that she thinks she is the candidate who can unite London and win.

Ms Jowell has put housing at the centre of her campaign. The former Labour MP says there is a "crisis" facing the capital, saying 25,000 fewer homes are being built than needed. She would make house building a priority, she pledges. "It's a matter of will," she says, insisting "the land and money is there".

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Labour's Tessa Jowell, who is in the running to become the party's London mayor candidate, says the system for choosing the candidate is one member, one vote.

What's important is that Labour chooses someone who can win the 2016 mayoral election, she says, adding that the "scale of our defeat" at the 2015 general election shows the party has "lost the art of winning an election".

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Lord Heseltine says David Cameron is more likely to be successful in his EU negotiations if he has the backing of his whole party.  

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Asked about the group set up by more than 50 Conservative MPs that say they will vote to leave the EU unless David Cameron secures far-reaching changes, Lord Heseltine says: "Well I could sign up for that, what the heck else would you expect us to do. 

"The only point of foreign policy is to enhance the national opportunity and stature of your own country, and no government in any other country would ever do anything else."

He says the UK is in Europe because it thinks it has a better platform or more trading opportunities than it would anywhere else.

"So if someone says Conservatives for Britain, well then sign me up," he adds.

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Asked about the planned in/out referendum, Lord Heseltine says it is "without doubt" David Cameron who won the election for the Conservative Party, adding that he hopes people understand "the complexity" of his task ahead in negotiating EU reform.

First up, though is former cabinet minister Lord Heseltine, who is talking about the Conservative Party's relationship with the European Union. "It's always been controversial," he says - as anything that changes the assumptions or structure of society is, he adds.

Hello and welcome to our live coverage of all things political, including updates from the Andrew Marr show and other political programmes. Appearing on Andrew's sofa this morning will be Conservative former Environment Secretary Owen Paterson and Labour London mayor hopeful  Tessa Jowell.