CH is a great place to begin cooking almost everything from scratch which is of course healthier for you and your family.
But if you must, bring your favourite brand stuff as even if they're available here, they'd be pretty expensive.
Bed linen, towels and curtains.
Contact lens solution.
Soft brown sugar, yes. Forget about self-raising flour - you can make it by adding baking powder and a bit of cornflour. Also forget about baking soda/powder - relatively cheap here, unless you need truckloads of it for goodness knows what reason.
Enjoy trashing all the things you don't need anymore! It feels great to have fewer possessions after your move.