Osborne's ring fence will be made of cheese wire

Power to break up the banks.

So Osborne is going to "reset the banking system". A difficult thing to do with trust between Westminster and the banks at an all time low. How is he going to do it?

Well, first there's going to be a ring-fence: but it's to be not so much electrified as made of cheese wire - if banks don't respect it, regulators will be able to break them up.

It's not just about the fence though - he also plans to make the banking sector more competitive by making it easier to switch bank accounts, and by introducing a new regulator who'll aim to help out new competitors who want to enter the game. There are also talks over how consumer power can be increased, to hold the banks in check.

There is a plus side for the banks: the leverage ratio won't be changed beyond 1:33, but as might be expected, they have not taken kindly to the news:

Anthony Browne, the head of the British Bankers' Association said:

This will create uncertainty for investors, making it more difficult for banks to raise capital which will ultimately mean that banks will have less money to lend to businesses.

"What banks and business need is regulatory certainty so that banks can get on with what they want to do, which is help the economy grow. This decision will damage London’s attractiveness as a global financial centre.

"Uncertainty" isn't really the issue though - banks have been under changing regulation since 2008. The main problem for the banks will now be flexibility, according to Credit Suisse analysts (via FT Alphaville):

Reducing options to transfer capital and funding – As we understand it, banks will be under tight scrutiny to implement strictly a ring-fence. This will clearly limit the flexibility for banks when setting-up their ring-fence plans and limit options to transfer capital and funding. Although this is hard to estimate at this stage, this could increase the overall costs of the reform for the industry. We currently do not have an impact in our estimates.

If ring-fence is to work, it needs to be enforced - but as banks make their money by finding their way around such restrictions, a truly impenetrable fence'll cost. Here is a summary of the estimated hits to the economy via FT Alphaville:

Estimates costs from implementation – The draft legislation published in October 2012 highlighted the following costs for the broader industry and economy: (i) on-going costs of £2-5bn per annum, which compares to our total profit £26.1bn for the five listed UK banks in 2014E; (ii) one-off transitional costs of £1.5-2.5bn; (iii) negative GDP impact of 0.04-0.1%; (iv) reduced tax receipts of £150-400mn (this assumes all bank costs are passed onto the consumer); and (v) a reduction in the value of the government’s shareholdings in RBS and Lloyds Banking Group in the range of £2bn to £5bn relative to a ‘do nothing’ baseline scenario (compares to current value of £45.1bn).

If banks don't respect the fence, regulators will be able to break them up. Photograph: Getty Images
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Could Labour lose the Oldham by-election?

Sources warn defeat is not unthinkable but the party's ground campaign believe they will hold on. 

As shadow cabinet members argue in public over Labour's position on Syria and John McDonnell defends his Mao moment, it has been easy to forget that the party next week faces its first election test since Jeremy Corbyn became leader. On paper, Oldham West and Royton should be a straightforward win. Michael Meacher, whose death last month triggered the by-election, held the seat with a majority of 14,738 just seven months ago. The party opted for an early pre-Christmas poll, giving second-placed Ukip less time to gain momentum, and selected the respected Oldham council leader Jim McMahon as its candidate. 

But in recent weeks Labour sources have become ever more anxious. Shadow cabinet members returning from campaigning report that Corbyn has gone down "very badly" with voters, with his original comments on shoot-to-kill particularly toxic. Most MPs expect the party's majority to lie within the 1,000-2,000 range. But one insider told me that the party's majority would likely fall into the hundreds ("I'd be thrilled with 2,000") and warned that defeat was far from unthinkable. The fear is that low turnout and defections to Ukip could allow the Farageists to sneak a win. MPs are further troubled by the likelihood that the contest will take place on the same day as the Syria vote (Thursday), which will badly divide Labour. 

The party's ground campaign, however, "aren't in panic mode", I'm told, with data showing them on course to hold the seat with a sharply reduced majority. As Tim noted in his recent report from the seat, unlike Heywood and Middleton, where Ukip finished just 617 votes behind Labour in a 2014 by-election, Oldham has a significant Asian population (accounting for 26.5 per cent of the total), which is largely hostile to Ukip and likely to remain loyal to Labour. 

Expectations are now so low that a win alone will be celebrated. But expect Corbyn's opponents to point out that working class Ukip voters were among the groups the Labour leader was supposed to attract. They are likely to credit McMahon with the victory and argue that the party held the seat in spite of Corbyn, rather than because of him. Ukip have sought to turn the contest into a referendum on the Labour leader's patriotism but McMahon replied: "My grandfather served in the army, my father and my partner’s fathers were in the Territorial Army. I raised money to restore my local cenotaph. On 18 December I will be going with pride to London to collect my OBE from the Queen and bring it back to Oldham as a local boy done good. If they want to pick a fight on patriotism, bring it on."  "If we had any other candidate we'd have been in enormous trouble," one shadow minister concluded. 

Of Corbyn, who cancelled a visit to the seat today, one source said: "I don't think Jeremy himself spends any time thinking about it, he doesn't think that electoral outcomes at this stage touch him somehow."  

George Eaton is political editor of the New Statesman.