Initially the band thought that fans did not want unreleased material, choosing to play only previously released songs during the 2014 tour.

[16] The two reformed the band with the lineup featured on 2014's live release Into the Mirror: Del Amitri in Concert, with keyboardist Andy Alston, guitarist Kris Dollimore and drummer Ash Soan.

Fatal Mistakes was recorded in March 2020 over a three-week period, with Del Amitri completing the sessions the day before the UK locked down due to the COVID-19 pandemic.

[20] "When Cooking Vinyl asked us to supply material for a bonus CD to go with the various Fatal Mistakes packages, we seized the chance to resurrect the B-Side.

We knew we had at least ten tunes written for the album that didn't make it into the final sequence," Del Amitri said in a press release.