When accessing the internet using Tor, a person's location and identity is obscured using layers of encryption. The browser can access regular websites more anonymously than other browsers, or it can access hidden sites which have the .onion suffix. Typically, the unlisted sites which comprise the dark web are associated with illegal activities, but Tor is also used by activists, journalists and regular people who want to bypass government censorship.
To access the alternative version of the BBC News site, Tor users can visit the URL bbcnewsv2vjtpsuy.onion. This address won't work in a regular browser but it will allow Tor users to view the international edition of the BBC News website.
The BBC says its content available on the Tor site includes foreign language services such as BBC Arabic, BBC Persian and BBC Russian, but does not include access to the BBC iPlayer streaming service.
In its announcement, the organization specifically named China, Iran and Vietnam as countries in which BBC News content has been blocked. It also said that providing a way for audiences to access its content even where it was restricted was "in line with the BBC World Service mission to provide trusted news around the world."