wisewoman I am in virtually the same situation as you, we moved into our first house in June last year and knew it was going to be tough, then we found out we were having a baby (I was due last week - it's still not here yet though). None of our parents are in a position to help with childcare or finances, except for maybe my dad who lives 200miles away!
Our joint income is about �38K, I did an online application tax credits yesterday and whilst I am off work on mat leave with baby I should get approx �20 per week.
I will have to pay approx �150 per week (4days) childcare, my workplace offer childcare vouchers through Imagine Co-operative (I think even if your workplace does not offer them you can still open an account with them - check the website). I can't get it up to post a likn at the mo but Google "Imagine Co operative"
I have done a quick calulation online and if I didn't get childcare vouchers then I would be entitled to approx �50 per week tax credits to hepl towards childcare.
We have been buying bits and peices throughout the pregnancy to try and prepare as we know it is going to be tough. For example, the moses basket is beautiful and cost �5 from a charity shop, the other moses basket was given to us by a friend, my mum is buying the cot, thanks to money / voucher gifts from my dad, friends and colleagues we were able to buy a travel system, although you can pick these up on ebay fairly cheaply. Each week when doing the shopping at Tesco we would buy one or two items like a pack of sleepsuits, bottles or nappies to try and help out once baby is here. Primark sell blankets for about �2 each, as well as bibs and other bits and peices - the baby won't care what label it is wearing ;-)