| "It 
				really isn't terribly complicated. If we are outside the EU and 
				we don't have what would be a stable and long term commitment to 
				access to the single market then a lot of the things we do today 
				in London, we'd have to do inside the EU 27," he told delegates 
				at a conference in London.
 "In the days after we lose access, if that's what happens, the 
				jobs that go, may be somewhat significant or they may not... It 
				will be a much more expensive model over time...We would be 
				operating a much less efficient business model, we'd have to see 
				how that evolves."
 
 Many investment banks use their London hubs to run their EU 
				operations, relying on the passporting system that allows them 
				to operate across the bloc while being regulated just in 
				Britain. The Brexit vote could threaten those arrangements if 
				banks no longer have access to the single market.
 
 (Reporting By Anjuli Davies, editing by Andrew Macaskill)
 
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