[SusieB]

I've forgotten.

[lettice]

A quick look, its looks like a Fuschia

[jaydig]

Himalayan Honeysuckle-  Leycestarian  formosa.

I had one grow in the garden once, although I'd never planted one, and could only think it had come from seed dropped by the birds.

[greenjay]

looks like a pheasant bush

[robinahood]

Yes, definitely Leycestria Formosa aka Pheasant bush.

[SusieB]

Brilliant, thank you.