David Cameron is on a collision course with his deputy Nick Clegg over banking reform, it emerged last night, with the Liberal Democrat leader accusing the banks of having "pointed a gun" at the economy.

The latest attempt to solve the eurozone sovereign debt crisis got the thumbs down from world markets yesterday, with sell-offs of equities and a further flight to safe-haven assets.

Is this decision by the BBC (remember that the first "B" stands for "British") just a little premature? The corporation's Today programme on Radio 4 is launching an annual business lecture in November and has invited Bob Diamond, the chief executive of Barclays Bank, to be the first speaker. But will Mr Diamond still be presiding over a British company by then, given the frequent hints that Barclays might be off to pastures new should banking reforms not go its way?

Outlook: D-day for Britain's banks is 12 September. That is when Sir John Vickers is due to unveil the final report of his Independent Commission on Banking. And with time running out to influence Sir John's thinking, it is clear the banks are increasingly spooked by the possibilities.

Bob Diamond has long been dubbed "the unacceptable face of banking". Now it seems he is the unacceptable face of flying too.

Today marks the opening of the Chelsea Flower Show where the green-fingered descend en masse on the Royal Hospital in London, although lucky journalists and sponsors had a sneak peak yesterday. While our spies were wandering delightedly through the elaborate displays, they could not help but notice a remarkably large presence from Barclays Bank. The group is clearly following the words of chief executive Bob Diamond, who said earlier this year that time for remorse was over. In fact they seem to have come up smelling of roses.

Tesco has raided the boardroom of Barclays bank for a new chairman to take over from its long-standing incumbent David Reid.

Barclays Bank shareholders dished out a strong protest against pay plans for Bob Diamond and other top executives at the bank's annual meeting yesterday. Including abstentions, 11 per cent of voters withheld support for its remuneration report, with rebellions against two specific bonus plans.

Outlook Had yesterday's announcement from Unilever that it is closing its final salary pension scheme even to existing members, been made a decade ago, it would have caused a storm – and certainly a major industrial relations dispute. These days, such closures are commonplace. They have already taken place at companies as varied as Barclays Bank, Morrisons the supermarket and Rentokil the pest control business.

Customers of many of the world's biggest banks and numerous other companies are being warned to expect fake emails trying to lure them to part with their log-in details, after what could be one of the biggest data breaches of the internet era.

Barclays Bank has become Britain's most complained about finance brand, grabbing the title from Spanish-owned Santander. According to figures issued yesterday by the Financial Services Authority, there were nearly 10,000 complaints a day about finance institutions in the last six months of 2010, with Barclays attracting 276,315 new complaints.

Outlook What is Barclays Bank up to? Eleven weeks ago yesterday, Bob Diamond, the bank's chief executive, told a public hearing of the Treasury Select Committee that he was "crystal clear" about one thing at least: Barclays headquarters would remain in the UK. Now, rumours are flying round the market that the bank has held discussions with US regulators about a move to New York – and Barclays isn't denying the story.