If you are on a budget hit ebay!!
There you will find slings, bedside cot, breast pump, a reclining chair for baby have daytime naps/play in, for clothes hit Matalan and Primark, and Ethel Austin if you're "oop North". Cloth nappies will save you a packet, I used muslins for the first couple of months with a fleece liner and waterproof wrap, ebay is a good source of these too.
Don't bother with; a moses basket, a baby bath (just get in the bath with the baby, the water doesn't have to be tepid, just not hot), baby lotions, soaps, washes, oils and so on, babies only need water to keep them clean, changing station, baby wipes (full of chemicals, yuck! wet face cloths do just as good a job and you can pick them up really cheap in bundles) sterilisor (breast pump and bottles in the dishwasher and rinsed with freshly boiled water is enough when you're bf).
Keep an eye on Mothercare/Toys'R'Us/Halfords etc and try and get your car seat in a sale, we got a Britax First Class for under £100, which goes from birth to 4 years, so it was a serious bargain. For your pram aim for a simple 2-in-1 style, rear facing so that you can see baby and they can see you, lies flat to begin with then sits up to form a push-chair as baby grows, again, check out sales and promotions to grab a bargain.
Also, ask people to give you vouchers, either Argos or Mothercare etc as Christening presents, we bought all kinds of things this way.