@Jaffas22 You can start having a look as early you want. It will help you to know exactly which brand, type and features you'd like. Make sure you read reviews by other mums on each one.
During my 1st pregnancy, I had already written a complete list of things we needed by just two days after my 12weeks scan. Lol. We were really excited. But we didn't rush to buy things though as we wanted to decide and make sure we really liked what before we bought them, also we were planning a house move then.
I had my baby's pram delivered by week 34 just in case. MiL threw a fit over bad luck having a pram in the house before first baby is born but seriously, you need them ready, and we lived 2 hours away from family then so we kept them at my parents inlaw's.
If you have room for things, and aren't superstisious. I don't see the problem with buying things early. If anything, it is handy to spread the cost!. Also means you can practice using them, setting up and folding away etc. Or you can buy just carseat before baby is born as you need that to come out of hospital & buy the pram after. Most companies can deliver in a couple of days, max a week or just go for a next day delivery.
I bought a complete travel system then which i'd recommend (Pram + Carseat+ Pushchair + Accessories).