New here so firstly a big hello to everyone. I have a mystery plant growing in my garden. I did not plant it there myself however it has popped up. It is now approximately 3 feet tall and seems to be getting bigger. I have asked at my local gardening center if they can identify it however no one has been able to identify it. So i have come here to see if anyone on the wide web can help me identify it.
Please see the attached photos.
Many thanks in advance for any help given.