The hhcp (host to host file transfer) command is widely used within the UK Academic Community. It is also used by some commercial organisations within Europe.
Although it is possible to use hhcp over Local Area Networks, it is mostly used to transfer files from one site to another over a Wide Area Network such as JANET.
At a JANET site where hhcp is the only file transfer program available? Fine, you can get access to Internet ftp through the Guest FTP Service at the University of London Computer Centre.