Excellent photo of one of the more difficult to find English roses. I planted a specimen from Pickering around 2.5 years ago near a flowering plum tree. It does not suffer from black spot but rather powdery mildew here and is quite thorny. The flowers are very full and have a strong scent, as you mentioned and are often quite large, around 5 inches across. One day I looked up in the flowering plum tree and 10-12 feet high in the tree was a cluster of Radio Times blooms! Upon closer inspection, I saw that this rose was throwing very long canes. I had no idea that this rose would do this, as all the descriptions indicate that this is a medium-sized shrub. We plan to cut the canes way back and relocate this rose to grow on a rail fence within the next month. Imagine the sight of this rose with its canes trained horizontally with clusters of hugh blooms every 6 inches or so.