[2] To-Mera formed in 2005 between a few friends: Julie Kiss (vocals), Lee Barrett (bass), Akos Pirisi (drums), Hugo Sheppard (keyboard), and MacLean.

Haken was formed by school friends Ross Jennings, Matthew Marshall, and Richard Henshall at first in 2004.

Charlie Griffiths was hired as their guitarist, and Henshall brought in To-Mera bandmate Maclean on bass.

In May 2015, Tom MacLean co-founded Psion, a progressive metal band that includes drummer Jasper Barendregt, guitarist Nikolas Wolf, and lead vocalist Bryan Ramage.

[2] At the end of 2019, Tom MacLean launched his mixing and mastering service, Twelve Tone Studio, for rock, metal, and alternative artists.