Isabel Hardman

Tony Blair asked Labour seven awkward questions this week, ranging from issues that everyone's talking about to rather more quirky ones that the former Prime Minister would like everyone to talk about, like using advances in DNA to fight crime. It's the mid-term, when parties start to wonder what they can tell voters they stand for in the next general election, what problems they believe the country is facing, and, more importantly, whether they think they've got a hope of solving them. I've spent most of today talking to Tory MPs about what they think the seven awkward questions for their own party might be, and here they are, in all their awkward and quirky glory: 1. How do the Tories address public concern on immigration while continuing to be a globalised economy?

David Cameron is setting off with his children to visit Angela Merkel on Friday. It's part of his EU reform mission that started and was thrown off course on Monday following the death of Margaret Thatcher. As I blogged back then, the circumstances aren't perfect, and one of the reasons for that is that France and Germany recently snubbed an invitation to be involved in the UK's 'balance of competences' review. But today Cameron tried to play down the significance of this. He told Adam Boulton: 'Our review of competences was always and will be a British exercise. We didn't particularly, that story was… anyone's free to feed into our review, but that piece of work is a British piece of work. For years people said you'll never have the European budget cut, I've got it cut.

Today's debates in Parliament about Baroness Thatcher were supposed to be a tribute to the first female Prime Minister. If you were looking for the most faithful rendition of this, you should have been sitting in the House of Lords, not the Commons this afternoon. In the Other Place, the debate is always rather more civilised and measured, though it has grown rather rowdier in recent years. But today the speeches painted a fascinating picture of Margaret Thatcher, not least because many of them came from those who worked with or in opposition to her when she was in power. Some were notable by their silence: Lord Howe arrived with notes, but left without speaking. Lord Heseltine was nowhere to be seen.

Well, that was inevitable. Sir James Crosby's announcement that he wants to give his knighthood back and forego a slice of his pension is surprising only in that it came a little sooner after the Parliamentary Commission on Banking Standards' report than everyone expected. He could have waited for a real public outcry to build, as it did with Fred Goodwin, but instead he's managed to walk off with a pension that's still £406,000 and perhaps a little dignity. Fraser argued last week that politicians are the ones who should be squirming over the banking crisis, but what Crosby's decision today shows is that the Banking Commission is wielding an impressive amount of power as it rumbles through its inquiries and reports.

In 1983, a Spectator piece argued that 'the most faithful followers of the Thatcher cult are to be found within the Labour Party'. Baroness Thatcher's passing was always going to be as much of a test for the Left as it would be a sad day for the Right. The Labour leadership knew this, and took care to craft statements and tweets which, while acknowledging the glaringly obvious political differences, praised Thatcher the woman. The party has suspended its political campaigning ahead of the local elections as a mark of respect. Ed Miliband's tribute in particular made clear that he had no sympathy with those in his party tempted to celebrate the death of the Iron Lady.

Tory backbenchers have written again to the Prime Minister demanding legislation guaranteeing a referendum in the next Parliament. Conservative MP John Baron delivered the letter, which bears more than 100 backbench signatures, to Downing Street this morning. While its existence was reported in the Sunday papers, Baron has now spoken exclusively to Coffee House about the letter's contents. I understand that though Baron and his colleagues working on the plan approached only backbenchers (and those include former ministers who left the government in September's reshuffle), a number of ministers and PPSs have also approached them to express sympathy with the idea, and there are several individual letters from PPSs going to David Cameron as well.

One other area besides immigration where Tory MPs want their leader to go further than he feels he can is, unsurprisingly, Europe. There is growing pressure within the party for the Prime Minister to get legislation on the floor of the House of Commons which would guarantee a referendum in the next Parliament. This is what Bernard Jenkin, who favours a referendum sooner than 2015, has to say: 'The Prime Minister's veto in 2011 gave his poll ratings a great fillip, but that veto was just ignored. They just decided to go ahead with the Fiscal Union Treaty anyway but without the UK. And the UK did not achieve any safeguards to protect UK banking and financial services which the PM was then demanding.

Boris Johnson makes a tricky interviewee. He's charming, vague, witty and able to turn the conversation to his advantage with his ornate language and humour. If all else fails, he does something with his hair. But today the Mayor of London met his match with the equally charming and witty Eddie Mair on the Marr Show. Mair confronted him not just with persistent questions about his ambitions, but also clips from this week's documentary on Johnson which appeared to show him discussing whether to hand over the details of a journalist to his friend Darius Guppy so Guppy could have him "physically assaulted." Mair then moved in for the kill.. "And you, having heard that, tell your friend that that you will supply the address. What does that say about you, Boris Johnson? Making up quotes.

It's not just Nick Clegg who is having a good long think about immigration at the moment: David Cameron is as well. He's got a big immigration speech on Monday, which shows how spooked the parties are by UKIP that they feel they need to at least address the topic, even if they insist that they're not adopting Nigel Farage's terms of debate. As he writes his speech, Cameron will probably have in mind the looming problem of how many Romanian and Bulgarian migrants are coming to this country when transitional controls lift at the end of 2013. If he doesn't, he should, because that backbench debate from Mark Pritchard on this issue now has a date: 22 April.