The song debuted at number one on the UK Singles Chart, making it Ora's fourth overall UK number-one single (and third as a solo artist) within three years.
The preview of the song was featured in Ora's commercial advertisement for Rimmel London Cosmetics during the 2014 BRIT Awards on 19 February.
"I Will Never Let You Down" is an up-tempo pop, dance and R&B song.
The track is set at a tempo of 128 beats per minute.
Ora herself likened the song to the work of Whitney Houston, particularly her 1985 song "How Will I Know".