The following report has appeared in the press:
I should add that the report was in the Mail in May 2012.
There are three things to note.
Firstly, that this review is done every three years. One is due now. It's not news.
Second, as was said then, there was (and is) no rational reason to leave.
Third, nothing has changed since then bar the Conservative threat to leave the EU.
So, if HSBC is thinking of leaving now it would be irrational, and a reaction to irrational Tory policy.
You know who to blame.