It’s not tall, but we have Cotoneaster dammeri as an undemanding, evergreen cascading plant over some vertical oak sleepers in a north facing aspect. Covered in small white flowers in spring, and with bright red berries in autumn/winter. It can trail over a lot longer than in the photo, where I’ve kept the length in check.
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.