So i am looking into buying a server here because it looks like a superb deal but am wondering if there is a way to transfer the backup of my current server which is hosted by a different company to this one. If this is possible please let me know how.
Download the world then reupload it to HostHorde. You can first make a backup of the world, either with the built in Multicraft backup, or with plugins, to make it a faster download. https://www.hosthorde.com/forums/resources/uploading-an-existing-map-to-your-server.29/