baby bundlers- a kind of nightshirt- they are great- no poppers on legs for constant nappy changing!They last a long time too, as it's the feet babies seem to outgrow on sleepsuits first.
my ds was not pukey, my dd had reflux, but I used a muslin as a drawshhet under her head so didn't need to change her bedding constantly.
so- lots of muslin squares-they can do so many different jobs.
breastpump- needed it as soon as I left hospital as couldn't latch ds on at first- but they sell the really good isis pump in tescos- you can send someone for it if you are desperate.you can always hire a milking machine from nct...
nappies- used nature baby nappies for first week or so, then tots bots, non-aplix, with a nappy nipper. they are fab, you can get away with just using size 2 as a birth to potty if you like. motherease rikki wraps are my fav.
get a big bucket- the bigger the bucket the bigger the gap between washes.
don't bother with flushable liners at first- bf poo too runny!
sling- wrap around slings really are THE BEST. baby carriers don't last long with people, the baby gets too heavy to be comfortably carried in them too quickly, you also don't have baby next to you in the same way. I have a didymos, but there are lots to try. The hiring tip is a really good one.
If you plan to wear your baby it's worth giving it the same consideration as you would buying a stroller.
do borrow as much stuff as you can.