That may be where the origin comes from, good point. I will try the parks department but I am specifically talking about a long time ago and not what happens now, hope they keep records :-)
I do know the one in Newcastle was donated by Bergen each year as they are twinned, and I'm fairly sure the Trafalgar Square one was donated by one of the Scandinavian countries after the way as a way of thank you for service.
Thank you for taking the time to answer