Q.Photos downloaded. Can you give me advice on what these problems are
The first two photos are both sides of a rose leaf.
The third is an ornamental cherry.
I presume they are some sort of fungal infection .
Can you give me any advice on treatment?

The roses have a bad case of rust disease, a fungus. There are treatments. Very important is to clean up all fallen leaves are the disease may overwinter in the soil. Treatment requires persistence - several applications and snuffing out any signs of recurrence. I don't know about the cherry but I've included info on common problems of cherry. It may be leaf spot which is also a fungus. I hope you can identify the problem.
https://www.gardeningknowhow.com/plant-problems/disease/learn-about-plant-rust-disease-and-rust-treatment.htm
https://www.gardeningknowhow.com/edible/fruits/cherry/cherry-tree-diseases.htm