U.f.orb - Orb (the) - 1992
Released by Big life
Tracks : 7 / Length : 74:01:30

U.S.S.R. repertoire (the theory of verticality) - Dj vadim - 1996
Released by Ninja tune
Tracks : 26 / Length : 79:25:22

Ukf drum & bass 2014 - various - 2014
Released by Ukf music
Tracks : 21 / Length : 79:06.48
digipack, compil
with Delta heavy, Camo & crooked, I am legion, etc...

Ukf drum & bass 2015 - various - 2015
Released by Ukf music
Tracks : 20 / Length : 79:20:32
digipack, compil
with Dimension, Calibre, Emperor, etc...

Ukf drum & bass 2016 - various - 2016
Released by Ukf music
Tracks : 23 / Length : 79:32:13
digipack, compil
with Friction, Brookes Brothers, High Contrast, etc...

Ukf drum & bass 2017 - various - 2017
Released by Ukf music
Tracks : 23 / Length : 78:22:30
digipack, compil
with Friction, 1991, Memtrix, etc..

Ukf dubstep 2015 - various - 2015
Released by Ukf music
Tracks : 22 / Length : 75:49:01
digipack, compil
with Proxima, Modestep, Bar9, etc...

Ukf dubstep 2017 - various - 2017
Released by Ukf music
Tracks : 22 / Length : 78:53:21
digipack, compil
with Borgore, Flux Pavillion, Killsonik, etc...

Ultra - Depeche mode - 2007
Released by Mute
Tracks : 12 / Length : 60:11:55

Ultra obscene - Breakbeat era - 1999
Released by Full cycle
Tracks : 3 / Length : 18:36:62
Ep cd2, digipack

Ultra-obscene - Breakbeat era - 1999
Released by Full cycle
Tracks : 15 / Length : 74:18:30
digipack

Ultramack 005 - Anodyne - 1996
Released by Ultramack
Tracks : 16 / Length : 61:06:32

Umbra - Boom boom satellites - 2001
Released by Sony music
Tracks : 10 / Length : 50:53:02
JP edition
Has three common tracks with Photon EU

Un - Dan black - 2009
Released by Universal Music
Tracks : 12 / Length : 46:00:36

Un jour de rêves - Dolly - 1999
Released by Murrayfield
Tracks : 12 / Length : 58:39:32

Un monde pour soi - Prohom - 2013
Released by Gourmets
Tracks : 12 / Length : 48:29.36
digipack

Unbalance - 2562 - 2009
Released by Tectonic
Tracks : 12 / Length : 63:45:01
digipack

undeniable - Terror danjah - 2010
Released by Hyperdub
Tracks : 15 / Length : 63:44:38
digipack

Under the flightpath - Darren price - 1997
Released by Mute
Tracks : 9 / Length : 61:14:57

Under the ice - Icicle - 2011
Released by Shogun audio
Tracks : 11 / Length : 65:40:33
shacd004 + hidden track

Under the sun - Machine code - 2013
Released by Subsistenz
Tracks : 11 / Length : 69:02:45
digipack, lp+cd

Under the sun - Mark pritchard - 2016
Released by Warp
Tracks : 16 / Length : 67:27.23
digipack

Under your sky - Underwolves (the) - 2001
Released by Jcr / compost
Tracks : 12 / Length : 59:01:56

Underdog underfoot - Flies are spies from hell - 2015
Released by N/A
Tracks : 8 / Length : 37:52.28
digipack, CDr, self-released

Underground and loud - various - 1998
Released by Just create
Tracks : 12 / Length : 78:04:24
compil
with O'cruize, More rockers, Brass wolf