A very leggy rambling rose
I have a very leggy rambling rose, its Felicite Perpetua (white). Due to a health problem I haven't been able to look after my plants very well. I bought the rose from a very reputable garden centre , it was a very healthy plant . I planted it in a large ceramic pot , it was lovely for a time and flowered . But due to the fact that its rained almost continually and I live in mild Cornwall its gone leggy. There is foliage at the top but the bottom is devoid of foliage . Should I prune it and if so how?
I would really appreciate some advice please