Sorry,trying to keep up with latest developments, but on the subject of taxation of non EZ jurisdiction traders when they would trade with Eurozone FFT taxed institutions, I think I read somewhere in the september EC proposal that in that case, the full burden of the tax would fall on the EZ taxed institution( they would have to pay it 2 times, for themselves and for their counterpart ). I am not totally sure( I read it 3 months ago ) but I recall something of this substance, so I don't understand why british have second thoughts about it, the EZ tax would be good for them( relocation > smaller volume from EZ counterparts and no tax to pay in any case by UK traders).
Apart from that, I don't even understand how this would work( taxing for example an american trading with a german ). It's against any fiscal logic and even against the residence principle of the proposal. Do you think CME for example will create some peace of software exclusively to count EZ traders tax? They have no obligation to do that. They would immediately have to create other software to display potential EZ taxed counterpart on order books for american customers( so that they don't get taxed ). It's just impossible. They would just stop to accept EZ traders instead, for those still at work, if they exists...LOL