No you're not being set up (well maybe a bit). If you tell the banks that the cost of doing business in London is an extra £100 billion above and beyond what they are currently avoiding err sorry paying, paying of course, and that extra cost won't exist if they work out of Paris Bonn Dubai or even Mumbai what are they going to do? Either move physically or on paper. Suddenly we have less rather than more money in the economy. Fact is this tax is a fantastic idea in principle and gives the Tory bashers a lot of mileage but it won't work in practice.