Ask-a-Dave's-Gardener: UK Plant Identification Please, 5 by idmn

idmn wrote:
Hi. What is this plant? I need to know how to prune it without it becoming too woody and large. Photos are attached, the one of the leaves is the only one I have but the quality is bad. You have to zoom in to see the leaves. I hope this is enough. This has recently been cut as seen in photos. The plant has woody base with long tall woody red stems/shoots and leaves as in photo.

Replies appreciated.
Thanks.