I can't see it as business investment depends on profits not politics, and once the business lobbyists get on to the European politicians they own, it’ll be the Europeans pushing for a deal for London. The ECB has already tried to stop countries from outside the eurozone trading euros, it failed. As you know London is Europe’s financial centre despite not having the euro, even Eurodollar futures are linked to Libor. One of the reason London is so successful is because it's outside of mainland Europe and the British legal system is excellent for these types of business. Soon there will be a transaction tax on financial flows, in Europe only, no one wants to pay that, look at Ireland, inside the EU, in the shit because of it's pro-business policies. I look forward to Irexit.