From the leaf buds I'd agree on it being a magnolia.
it looks like leycesteria formosa better known as himalayan honeysuckle
Looks like a honeysuckle ( not sure which type) the berries are bird friendly.
Thank you, i have no idea how it got in my garden and so far its quite tame so i'll leave it and let the bees enjoy it.
is it something i should keep or should i get rid of it