scaryteacher - you would rather potentially give up extra billions to spend on schools/hospitals/poverty in the UK if it means that we don't have to give more overseas aid? It's the banks that will be paying, so surely extra aid overseas is a good thing, not a bad thing.
As for the argument that the banks will go elsewhere where there isn't a tax - London already has a transaction tax on shares - 0.5% that its competitors don't. And yet London has one of the biggest stock markets in the world.
The London financial institutions couldn't just ship out to Asia/the US because it's an important geographical base between the time zones of the US and Asia. And Germany won't benefit because they've already signed up to implementing the tax.
So the government's arguments against it are pretty weak.
Incidentally, there is an unelected man in Parliament whose job it is to protect the interests of the City.
'The Remembrancer has Parliamentary duties, involving a constant watching of all Bills introduced, or proposed to be introduced, to see whether they are likely to affect the interests of the City Corporation. These duties necessitate constant communications with the various departments, the Ministers, and the permanent officials. For this purpose the officials Of both Houses of Parliament give him facilities of admission and attendance, and in the House of Commons he has the privilege of a seat "under the clock." '
Who do you think Cameron is working for, the bankers, or for the public when he opposes a tax on the banks for the benefit of the public?