| Take Me to the Hospital | 2008 | Original Production | 7180 |
| Talkin’ Loud | 1990 | Original Production | 6521 |
| Taste Media | 1996 | Original Production | — |
| Tech Itch Recordings | 1993 | Original Production | — |
| Technique Recordings | 1999 | Original Production | — |
| Tempa | 2000 | Original Production | — |
| Text Records | 2001 | Original Production | — |
| The Death of Rave | 2012 | Original Production | — |
| The Grey Area | — | Reissue Production | — |
| The Magical Music Box | 1993 | — | — |
| The Mail on Sunday | 2 May 1982 | — | — |
| The Red Box | September 2006 | Reissue Production | 13227 |
| The Rocket Record Company | 1972 | Original Production | 3053 |
| The state51 Conspiracy | 1991 | Production | — |
| The state51 Conspiracy | 1 January 1991 | — | private company limited by shares |
| The Store for Music | 2001 | Original Production | 75454 |
| The Sunday Times | 20 October 1822 | Publisher | — |
| The Vinyl Factory | 2001 | Production | — |
| The Weird Beard | 2017 | Publisher | — |
| The Wire | 1982 | — | — |
| Third Foundation | — | Original Production | — |
| Third Mind Records | February 1983 | Production | 7791 |
| Threshold House | 1987 | Original Production | — |
| Threshold Records | 1969 | Original Production | — |
| Thursday Club Recordings | 1993 | Original Production | — |
| Time Is Now | — | Original Production | — |
| Tin Angel | 2007 | — | 22499 |
| Titan Records | 2011 | Original Production | — |
| Toccata Classics | 2005 | Original Production | — |
| Tom and Jerry | 1992 | Original Production | — |
| Toolroom Records | 2004 | Original Production | 14182 |
| Toolroom Trax | — | — | 14182 |
| Topic Records | 1939 | Production | 478 |
| Touchin’ Bass | 2002 | Original Production | — |
| Trade Mark of Official Quality | — | Original Production | — |
| Transatlantic Records | 1961 | Production | 372 |
| Transgressive Records | 2004 | Original Production | — |
| Tring | 1990 | Imprint | — |
| Tring International PLC | 26 January 1990 | Reissue Production | — |
| Tripoli Trax | 1994 | Original Production | — |
| Tristar Records | — | Distributor | — |
| Trojan Records | 1968 | Reissue Production | 6448 |
| Twisted Records | July 1996 | Original Production | 2112 |