Remember this from a few weeks ago @rachelbrooks Thank you for the advice. I stripped the leaves and cut it right back and now it's thriving and free of black spot. I hope you have yours a second chance @helenhourston 👍🏻😀
Looks like black spot @yodamama. You can buy a spray and cut off any infected leaves and any that have dropped onto the ground and you are supposed to burn them otherwise the spores of the disease get into the ground. I have tried all this and still get it on a couple of my roses...I think particularly the older variety are susceptible to black spot. The other option is to dig it up completely... I can't bring myself to do this when they flower so I just pick the leaves up!