Chris Mason: Burnham opens debate on huge issue of social care reform

The BBC's political editor writes that the pitch from Andy Burnham is that there needs to be a willingness to say 'the things politicians usually avoid', the BBC's political editor writes.

Conference speech day is always a big day for a prime minister, and perhaps no bigger than when it is your first one in the role.

He wants to shake up social care in England, but would only be able to do so after a general election given he was committed to the tax promises Sir Keir Starmer made at the last general election.

This prompted a flurry of chat about how his social care plan could be paid for - and in particular the future of what is known as the triple lock, the promise to increase the state pension in line with wages, prices or 2. 5%, whichever is the highest.

He has the leader of the Unite union, Sharon Graham, saying it could be 'electoral suicide' to ditch the triple lock.

Meanwhile the markets - which determine the cost of borrowing for the government - are keeping a keen eye on whether Burnham's promises appear to be financially credible.

In other words, he has to be able to point to things where money won't be spent, as well as where it will be.

No10 are being pretty coy about precisely what Andy Burnham will or won't say on all this later on.

They really don't want to overcook it or overdo it, instead suggesting it is others who have been getting carried away.

But ministers are well aware that a hare is running about it all - and given that, it would be extraordinary if there was no mention of it all, given that promise about 'honesty', candour and trade offs.

Sufficiently extraordinary that his critics would pounce on what they'd see as a precise lack of the very thing he is promising - candour.

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Folk I am hearing from this morning suggest, as one figure put it,