It doesn't look too bad to me. Young rose foliage is often red. Have you checked for aphids? If there are any, just squash them.

Is this a new rose planted on ground that has been weed killed if so then sometimes the leaves can curl and look retarded, or could you have a pest problem, have seen similar to this on occasions where the rose leaves curl completely up if it is this then it could be the rose leaf sawfly larvae?

I will examine it for aphids and sawfly tomorrow! No weedkiller has been used but the rose has been transplanted from my daughter's garden. There was not a rose in this position before. It just looks rather weak in comparison to others in the garden and I was worried about the curling and yellowish leaves in case it had a disease which could spread. Thank you for your answers. I feel reassured.

when did you transplant it? if its only recently then that is why. once new roots establish it will be fine. keep it well watered.

I transplanted it last spring Seaburngirl and it did quite well in the summer considering my daughter had had it sitting in a bucket for a few weeks while she moved. I'm sure you are all right and I am expecting too much. I'll just mollycoddle it along and hope for the best. I can't find any pests on it so the leaf curl is puzzling. Thanks everyone.

is it in a 'colder' spot? some plants do curl when cold.

Thank you everyone. Seaburngirl, you might be right about a colder spot, but I'm pleased to report that the rose eventually leafed up and has produced 5 lovely blooms! It is called The Prince's Trust (or something like that)!

That's brill, see patience is a virtue :o))