There are 12 separate investment banks advising the London Stock Exchange and the Deutsche Börse on the "merger of equals" between the two stock market operators, probably the most important corporate deal of the past decade. They will be raking in hundreds of millions in fee income, if you include the legal advisers, accountants, PR firms and the rest. Not one of them appears to have spotted the fairly obvious fact that investors in the Börse that are index-linked funds, speaking for 15 per cent of the shares, cannot vote on the merger until the votes from elsewhere have crossed 50 per cent. The tender offer is supposed to end today; the Börse has rushed out a statement saying it is considering lowering the threshold to allow the vote to go through, which would mean a delay of two weeks before the votes are counted. There has been no formal announcement, but it is expected to be cut to 60 per cent, or even 50 per cent, to allow the deal to go through. The whole thing has been hopelessly botched. The statement to that effect was posted on the Börse website at 10.15 pm yesterday but not sent elsewhere, such as to news organisations which had been requesting it. It is all being described as a "technicality".