In the early days, the label released music by Romanthony, DJ Sneak, Ashley Beedle, Milton Jackson, Mateo and Matos, Jersey Street as well as productions by McKay himself.

[7] Since its relaunch in 2011, the label has featured artists such as Basement Jaxx, Camelphat, Claptone, Danny Howard, Dixon, Illyus & Barrientos, Mihalas Safras, Kaz James, Flashmob and Optimo.

In 2003, McKay produced and mixed the Linus Loves single "Stand Back" (on this occasion recording under the pseudonym Brian Warner).

Between 2004 and 2006 using the pseudonym Kevin Kennedy, McKay co-produced and mixed all of the Mylo material released on the Breastfed label including the UK-platinum album Destroy Rock & Roll, the UK #3 hit "Doctor Pressure" and UK top-40 singles "Drop the Pressure", "In My Arms", "Muscle Car" and "Destroy Rock & Roll".

[12] As well as his A&R and production work on the album, McKay was also responsible for running the label, managing all the UK releases and worldwide licensing.

"[18] McKay's remix of Romanthony's "The Wanderer" reached number 14 on Music Week's Cool Cuts chart on 19 May 2011[19] and was described as a "brilliant rework".

In 2015, McKay continued to collaborate with Toolroom Records, releasing the single "Check It" that peaked at number 49 on the Beatport Deep House chart and a further 5 albums including a retrospective of Glasgow Underground's catalogue from 1997 to 2007,[26] a best-of for the year[27] and compilations celebrating the annual dance music events in Miami,[28] Ibiza and Amsterdam.

[31] 2017 saw McKay continue to expand the genres he produced releasing progressive house (two singles with Grum, "Shooting Star" and "Dark Train" - both peaking at numbers 9 and 11 respectively on the Beatport Progressive House charts) as well as creating the genre-themed mix albums Callisto and Callisto Volume 2 for Glasgow Underground.

As well as singles, McKay released his first solo album, The Love Forever on his own label, a move that prompted Mixmag to hail his Glasgow Underground imprint "a haven for great house music.

He also hit the main chart with his remix of Start the Party's version of the Donna Summer classic "I Feel Love", a release that was supported by international DJs like Monki and Carl Cox.

Shortly afterwards, they were to become only the second label in the store's history to command both the #1 and #2 spots on the chart when PAX's "Electric Feel" joined Andrew Meller at the top in June.