Agree StormChaser.
Well, I've still not been contacted! If it's true some people were contacted in advance then I believe that there is a case for IG to answer.
Extremely poor from IG
I've just heard the rumour about this. To not yet give notice and expect 100% margin by Friday is not on!
I would be non the wiser had I not stumbled across it.
Please do rethink the timescales to cover.