Gee,
You have a good list of important, reasonable questions that deserve straightforward answers from your higher-ups. It may well be that they're not entirely sure how it's all going to shake out and don't want to pass on bad information. (A common problem where I work! One day you're told ABC and next week you're told XYZ. You really can't tell what's going on until it's actually happening!)
Regarding a pay increase, however, over the past few years, I've seen plenty of people at all levels - from mail room clerks to vice-presidents - being assigned more duties with no increase in pay. In one case there was actually a pay CUT, but the choice was that, or lose the job entirely. Of course, I don't know how UK laws with employement contracts would factor into this, since I'm in the US in an "at will" state.
Not much help, I know.
But thanks for my morning laugh! The image of a manager "throwing his toys out of the pram" - priceless!
