By Meadowland
Monmouthshire ,
United Kingdom 
Photo of entire plant
3 Jun, 2025
Answers
I think you are right Eileen..there was a mature one years ago not far from where this is growing.
4 Jun, 2025
Leycesteria is what it looked like to me too.
5 Jun, 2025
Thanks Owd...have just pulled it out!
5 Jun, 2025
It could be the Himalayan Honeysuckle [Leycesteria formosa] but I don't remember it having such toothed leaf margins.
4 Jun, 2025