I am unaware of any free commerical sites
I don't know who your ISP is, Blueyonder now Virgin Media offered all its users a website. While I do have a small website I use most of the space to store files, these can be accessed using FTP anywhere in the world.
Your ISP may well have an Anonymous FTP, these are usually password protected but not very secure.
Your first port of call should be your ISP.