Maybe I don't know. These negotiations have to be based on long term considerations I think, unfortunately.
@NinjaFletch
Look for yourself. Which side seems concerned over article 50.
The EU wants you to trigger the article 50 because when you do you are the only one in trouble and the suits can start their pro-EU lobbying with the banks and industries based in the UK. But it's also true that not triggering it is bad for everyone because it creates uncertainty.