No madcat I dont use non-bio and never have...Oliver clothes have always been washed in whatever we buy surf or whatever

Its all to play on safe side to do with allergies and ezcema and stuff far too cautious if you ask me
You dont need to take your bottles into the hospital as the hospital provides little glass bottles or milk and an assortment of teats for you free of charge or they should be as they are supplied to nhs by the different milk companies.
As for Mat Bag.....
you - a few nighties/pjs, dressing gown, slippers, changes of underwear (plenty) , socks (your feet can get very cold!), toiletries (your usual stuff really!) a towel (although the hospital should provide nice to have your own I think!) Mat Pads, breast pads and going home outfit.
Snacks, something to drink and maybe read unless you go into hospital at latter stages
baby - sleepsuits 2-3, vests 2-3, cardi, bibs, hat (v.important because it helps regulate a babys body temp after birth), blanket/shawl, going home outfit, nappies (not provided) cotton wool for changing bum (not provided) nappy bag (not provided)
OH AND DONT FORGET YOUR MOBILE PHONE LIKE I DID CAUSE I COULDNT REMEMBER ANYONES TELEPHONE NUMBER TO CALL THEM
Remember your OH can always bring anything you forget/need if you stay is longer than a day or two!