He has produced and remixed many tracks for Dido, Rob Dougan, Pet Shop Boys, Simply Red, R. Kelly, U2, Moby, Grace, Tricky and Suede.

[5] In 1992 Champion Records stepped in to help with funding and advice, and the label was restarted, with Reverence by Faithless its first album release (it has since been bought out by BMG).

[6] In the United States, Rollo is known for his production work on Dido's albums: No Angel (1999), Life for Rent (2003), Safe Trip Home (2008), Girl Who Got Away (2013) and Still on My Mind (2019).

[13] After moving record labels to Armada Music, Rollo (as R Plus) released a cover of Joy Division's 1980 hit "Love Will Tear Us Apart" on 7 May 2021, and features singer Amelia Fox.

I stole my first Joy Division T-shirt from a shop in Camden Market, and got to fleetingly meet guitarist Peter Hook years later at a party at the Hacienda in Manchester.

[22] Some streaming services erroneously list Faithless as a collaborative artist on R Plus releases, due to Armstrong's involvement in both projects.