| # | SP/EP Title | Release Date | Label | UK | USA |
| 1. | X Trax | 1/1995 | Soma | | |
| 2. | Day 3 EP | 16.12.1996 | Soma | | |
| 3. | Percy X Presents Short-Fiction | 07.07.1997 | Freeview Preview/Rough Trade | | |
| 4. | New Ground | 09.03.1998 | Soma/Play It Again Sam | | |
| 5. | User Friendly EP
(Reproduction / Lock-In / Twilight / User 1) | 11.01.1999 | Soma | | |
| 6. | Artwork | 22.02.1999 | Aquatrax/Intergroove | | |
| 7. | Worklife EP
(Worklife / Worklife Groovelock / By Night / Salsa Break 2) | 06.12.1999 | Soma | | |
| 8. | Asphyx / Rd 600
& Sterac | 05.06.2000 | Rewind The Classics/Intergroov | | |
| 9. | Break It Down | 02.10.2000 | Soma | | |
| 10. | Maintain / Where's The Music? | 19.02.2001 | Soma | | |
| 11. | Voyager EP
(Voyager / Let's Go Back / Breaking Out)
& X Funk & Funk D'Void | 21.05.2001 | Soma | | |
| 12. | Gain EP
(Gain (Mark Broom remix) / Find Yourself / Relentless (Rue East remix) / Relentless Groove Locks) | 12.11.2001 | Soma | | |
| 13. | Afterplan EP
(Afterplan / Feel It / No SU) | 10.06.2002 | Soma | | |
| 14. | Time To Jack / Club X | 19.08.2002 | Soma | | |
| 15. | Zaytoon / Wrong Way Round
& Active Service Unit | 02.09.2002 | Dublin London | | |
| 16. | On A Day / Dark'n'Sharp | 16.12.2002 | Soma | | |
| 17. | Lady Killer / Box Clever / Indian File
& Mark Broom | 15.12.2003 | Soma | | |
| 18. | Addicted
& Mark Broom | 04.10.2004 | King Of The Snakes | | |
| 19. | Tokyo Windbag EP
(Fashion Show / Fag Machine / Pogo Pig)
& Subway Lung & Chris Rotter | 16.05.2005 | Fire Wire | | |
| 20. | Unreleased Vol 1 (Missing Link (First mix) / Addicted beats / Spect To The Man (Broken mix) / Lucid Dreams (Broom's Chime mix))
& Locutus & Mark Broom | 12.12.2005 | King Of The Snakes | | |
| 21. | Audiomer EP
(Audiomer / Circuit Dancer / Three Zeros)
presents The Separatists | 13.02.2006 | Soma | | |
| 22. | Bug Rider / Krockit / Lay Six
presents The Separatists | 10.04.2006 | Soma | | |
| 23. | Soma 20 Ltd 001 EP
(X-Track 1 (Regis remodel) / Make My Day (Ryan Crosson Morning Sorrow remix))
& Alex Smoke | 28.09.2011 | Soma | | |
