I've just read on the bbcnews app
1) HSBC to move staff from Canary Wharf to Paris.
2) Also that Financial Services, where London is the Market Leader, especially for the EC will also be controlled from within the EC. Already a Latvian has been appointed today as the new EU Financial Services Commissioner, he was the deputy before, something to do with the Euro. This is all news released this evening.
Check it out for yourselves, there was too much info on BBC news UK website for me to remember it all.