Portishead and Interpol have been confirmed as the headliners for the upcoming Atp Iceland 2014 festival.

The two acts will hit the stage with local acts at the former North Atlantic Treaty Organization (Nato) base in Keflavík in July (14).

The annual Atp festival launched in Iceland last year (13).

Portishead have a long history with the All Tomorrow's Parties organisers - the influential British band curated an early Atp in 2007.