Beginner Gardening: Pruning rose bush, 2 by Aussieinlondon

Aussieinlondon wrote:
Hello,

I have moved into this property and there are two large rose trees out the back. I dont know what type of rose it is and there are no flowers. It looks overgrown and there are red rosehips on it. Its autumn here in london and frost hasnt set in yet. Can i prune it now? How do i prune it and how much do u cut off? Please help i have no idea what im doing and would love to see some roses haha when will it flower do you think? Is there a way i can identify which type it is? Also the leaves are yellowing and some are brown..is it sick?

Thanks!