As with all Send Away the Tigers-related promotional material, the cover image is taken from the photography book Monika Monster Future First Woman On Mars by Valerie Philips.
The song "1404" recalls a 'lost chapter' in Welsh history, when Owain Glyndŵr was crowned Prince of Wales in that year having successfully revolted against the English. He was, however, the last native Welsh person to hold the title Prince of Wales.
Two videos were filmed for the song. The version used for promotion on television, commissioned by the record label, features teenagers in various everyday group situations with lyrics from the song occasionally flashing on the screen. The alternative version, commissioned by the band themselves after being disappointed with the label's version and directed by Valerie Philips, features the girls featured on the Send Away the Tigers cover art miming to the song.