Storage locker question?

I left Iceland around 5 years ago for what was supposed to be temporary and have a small storage locker in Reykjavik that I’ve been paying for. Because of health reasons I have not been able to get back to empty the locker.

Would anyone have any suggestions for any companies or any advice for getting the stuff in the locker transferred to a storage locker in London

I understand it’s a long shot but otherwise I am just going to cancel the locker and everything will probably be disposed of