Jade89 wrote a list a couple of days ago that was dead comprehensive, I would do a search for her and find it.
Just remember that all you need are the basics,
Somewhere for baby to sleep ( plus some sheets and cellular blankets)
Something for baby to wear ( in the first few weeks a-vest sometimes called a body suit and a baby grow- sometimes called a sleep suit is all you will need) I would buy some in newborn and a couple in 0-3...I had 5 in total when Logan was born!
Maybe a Snowsuit depending on what season baby will be born
Nappies, Wipes, Sudocrem (or other nappy rash cream) Changing Mat
Bottles, Steriliser, Formula ( if your not breastfeeding)
Cotton Wool - for washing baby
Maternity Pads and Breast pads for you
Pram ( maybe a travel system if you have a car) Don't buy a mega expensive one though becasue they aren't in them that long! Toys R us have a good range
Maternity Bra - you need good support! lol
Infacol for when your baby gets colicky
A Dummy - Ididn't want to let Logan have one but it turned out to be a godsend!
Things I wouldn't buy
Baby bath
Baby lotions or creams or bubble baths etc - just use water for the first few weeks and even after then I only use aqueous cream which you can get on prescription! lol ( or costs £198 for a big tub
)
A bottle warmer - whats the point?! A jug of hot water from the kettle does the job!
Once your baby is home you can ask friends or relatives to get stuff for you if you need it. I bought far to much in advance and wished I hadn't, My hubby said remember the Asda is 24 hrs I can buy anything we don't have!
Good Luck!