Ed Miliband will this morning talk about how banking can work for the people, in a speech at Canary Wharf.
He is expected to discuss a "new era of responsibility", suggesting that if the banking industry "continues on its current path" it risks becoming "further isolated" and provoking "public anger".
"This is not about one man, one bonus or one knighthood," he is expected to say. "Nor is this about the politics of envy.
"It is about a culture of responsibility. Labour has set out the case for new rules to tackle irresponsibility from the benefits office to the boardroom. Values of fairness matter more than ever when times are tough...
"This is a call on banking to recognise it has reached a crossroads. This is a call on banking to recognise that it should take the path of change. To recognise that we succeed or fail together...
"One nation banking recognises that these institutions cannot be isolated from the rest of society - that we are once again at risk of becoming two nations in this country, segregated economically, geographically and socially.
"This is not the kind of society in which I want to raise my children. And it is not the kind of society in which the vast majority of people in this country, including bankers, want to raise theirs."
Earlier this week, we had David Cameron quoting Tony Blair at PMQs. Now we have Ed Miliband borrowing from the idea of "one nation Conservativism", traditionally a Tory grouping who prioritise social justice and equality as much as economic freedom.
Next we can expect Vince Cable on Reaganomics... or something like that.