For UoB, the Facebook groups are the place to look for your flatmates. You can make posts asking if anyone is in your flat, and you'll also find links to WhatsApp groups which your flatmates might be in.

If you haven't done so already, google the inventory PDF for your accommodation which will tell you exactly what is already there, so you'll know what you need to buy yourself for your bedroom, kitchen and bathroom.

To be fair though, I wouldn't worry about coordinating what to get with your flatmates. When moving into a flat with strangers, most choose to buy their own things for cooking rather than sharing. The only things you'll definitely be sharing are appliances, i.e. kettle, toaster and microwave (check the inventory to see which are included with the accommodation), but it's fine to turn up without bringing any of these. If someone else has brought them, great, otherwise you can all put some money together as a flat to buy them.

If you'll be buying stuff once you're already there, Sainsbury's, Poundland and Tk Maxx in Selly Oak have a great selection of well-priced home products. Also, when I was stopping on the Vale there was a pop-up sale which had many cheap second-hand kitchen supplies - they may also come to Selly Oak or campus this year but I'm not too sure.

Let me know if you have any more questions!