This is from Emma's Diary, and they say this should get you through the first 6 weeks......(remember you'll get loads of stuff as gifts too)
Things you definitely need:
Cot (plus mattress, blankets & sheets)
Car Seat
Pram/ Buggy/ travel system (one of these)
6 x sleepsuits/ long sleeved sleepsuits
6 x vests/ shortsleeved suits
2 x cardigans/ jackets
Shawl or snowsuit
Hat, mittens and bootees
Changing Mats
Nappies
Bottles/ Teats/ Bottle Brush (needed if not breastfeeding)
Nursing Bra & Breast pads
Loads of bibs
Loads of towels/ flannels/ muslin squares (for bathing & dribbles)
Loads of kitchen roll and cotton wool pads
Brush & Comb
Things that are handy, but not essential
Moses Basket/ Crib (plus mattress, sheets and blankets)
Baby bath
Baby box or bag
Sling
Bouncy Chair
Baby Monitor
Changing Bag
Steam steriliser
Breast pump
Baby Lotion
Baby wipes
Bath thermometer
Nail scissors
Nappy Wrapper
Obviously, this list is a good basic list, and you can shop around the recommendations to get the stuff that suits you.......Happy Shopping