http://www.youtube.com/watch?v=PYye0zZ3fH4
The clip for those who missed it
In theory, were Paris and Berlin to adopt such a tax design, any trade involving the London branch of a German or French bank would be hit, even if it involved a UK counterparty. And because the tax is on the trade itself, French and German authorities would seek to recoup the tax from the UK counterparty as well.
Would people not just abandon those banks?
http://www.ft.com/cms/s/0/9a4317b6-107f-11e1-8298-00144feabdc0.html#axzz1dwXtIXDh
The clip for those who missed it

In theory, were Paris and Berlin to adopt such a tax design, any trade involving the London branch of a German or French bank would be hit, even if it involved a UK counterparty. And because the tax is on the trade itself, French and German authorities would seek to recoup the tax from the UK counterparty as well.
Would people not just abandon those banks?
http://www.ft.com/cms/s/0/9a4317b6-107f-11e1-8298-00144feabdc0.html#axzz1dwXtIXDh