reminds me of an Hibiscus. It would be better in the ground.

Seaburngirl thank you very much for your reply. I’ll try to find a spot in the garden for it. Do you know how big it could grow?

they are quite slow growing and I have seen them over 6ft tall. though they respond to pruning to keep them is shape/size.

As above, hibiscus, they are slow growing but can be over six feet, however they can also be kept in bounds with pruning

Prefer a very sunny spot for maximum flowers, they come into leaf late so come spring don't think it's dead just because nothing is showing when everything else is in leaf

A lovely plant and worth the space

Seaburngirl & Grandad gar thank you so much for your help & advice which is very much appreciated. I’ll definitely find a spot for it in my garden. So glad I didn’t throw it away!