Totally agree with the lack of professionalism and empathy practised by HR. When I was made redundant (from EDS just as HP were taking over) some 20 y.o. HR smart arse handled my exit. If I wasn't so eager to get my redundancy payout I would have punched this kids lights out.
What I would urge everyone who reads this is to immediately devise a contingency plan for when you get the tap on the shoulder. It will take a lot of pressure off you and you will be happier. Work out what your redundancy payments equate to in hand and then you can work out how long can you keep going before your next job (if you need to stay in the workforce). Worst case scenario. Staying real will keep you sane and not dropping into the black hole of depression. There is light after the storm.