A lot of companies seems to have huge sales on at the moment online to entice people to shop so you may get some bargains!
My advice...Ikea furniture if you need new, we got a cot, wardrobe, mattress and changing table on a chest of drawers for less than £500 - they also do cheap bibs/towels/blankets. For me personally, the changing table was an essential, some people are very happy on the floor etc but I just found it better for my back, I’m still using it for dressing and she’s just turned 3!
Get a cheap pram, I’d go second hand as they are only used for 6 months max. My pram bit for the travel system was used about 3 times as she hated it and we used a carrier instead. Also you can get an idea of what’s important - steering/size/folding/sunhood etc so that when you buy a stroller you will get one you actually like. Lots of people spend £800+ on a pram that barely gets used and then use a £60 stroller for the next 3 years... (this was me).
Get a good pump if you plan to pump. This is not an area to economise, they are not all the same, I recommend medela.
A sling was an essential for me - I got a wrap around one on eBay new for about £15.
If you’ve got friends with babies, it’s worth putting on Facebook that you’re in the market for hand me downs - people will be delighted to dump a load of stuff on you to sort out!
I recommend the angel care baby bath insert over a baby bath. Less mess!
One thing I personally wish I’d bought new was a bouncy chair, I got a couple second hand and they were both pretty duff but I may have been unlucky!
Hope this helps. Good luck!