With tensions running high within the Coalition Government over Europe and some suggestions that it could split asunder, the Conservatives and Liberal Democrats badly need something to agree on.

They found it yesterday when Business Secretary Vince Cable revealed that the Government is to accept "in full" the Vickers report, recommending the separation of banks' retail business from their so-called casino business.

Mr Cable likes to sound tough on such issues but what is being proposed is essentially a compromise. In opposition, he pressed hard for the complete separation of retail from investment banking, along the lines of the Glass-Steagall Act, which enforced separate ownership in the US between the 1930s and the 1990s. The Vickers Report suggested forcing banks to ringfence their retail operations rather than dispose of them.

Some Tories were concerned that even this intervention would hamper the economy and the banks themselves have lobbied hard for the proposals to be watered down. HSBC has even threatened to move its headquarters out of the UK.

The news that the Coalition is to implement Vickers is welcome. The moral hazard implicit in the banking bailout, with losses socialised while profits were privatised, was unacceptable. Never again should the cost of a bank bailout fall on taxpayers.

The move will create a more even playing field in banking, given that some players, including the Clydesdale and the mutuals, do not have investment arms.

However, celebrations would be premature. Banks will not be required to complete the move until 2019, while action is required now. Also nobody is sure quite how effective the ringfence will be and exactly where is should be placed. And, as the preparation of a green, followed by a white paper, will take several months, the big banks are expected to continue their attempts to water down the reforms.

Nor are they pain-free for bank customers. The changes are expected to cost anything between £4 billion and £12 billion. Customers will pay through higher interest rates and lower borrowing.