Sum and Substance is a compilation album released by the British rock band The Mission on 7 February 1994 through Vertigo/Phonogram Records.

[5] A remix of "Tower of Strength" by Youth preceded the release, although it was not included on the compilation.

[6] A second single "Afterglow" appeared in March of the same year, but failed to chart.

[7] A VHS with all the music videos produced by the band bears the same title.

[8] The band did a short tour around the UK in support of the release.