| Plummet Airlines | 1973 | 1977 | — |
| Pneumania | 1979 | — | — |
| POG | 2000 | — | — |
| Polarsets | 1 December 2008 | — | — |
| Polymath | 2007 | — | — |
| Pop Will Eat Itself | 1986 | 1986 | — |
| Popes of Chillitown | 2009 | — | — |
| Porcupine Tree | 1987 | — | — |
| Portent | 2005 | — | — |
| Portishead | 1991 | — | — |
| Postmortem Promises | 2006 | — | — |
| Potential Threat | 1981 | — | — |
| Power Quest | March 2001 | 2023 | — |
| Praecantator | 2016 | — | — |
| Prairies | 1 May 2011 | — | — |
| Pram | 1990 | — | — |
| Praying Mantis | 1974 | — | UK rock/metal band |
| Precious Little | 1976 | 1981 | — |
| Prefab Sprout | 1978 | — | — |
| PRESIDENT | 2025 | — | — |
| Pretenders | March 1978 | — | English‐American rock band |
| Pretty Vicious | 2014 | — | — |
| Primal Rock Rebellion | 2011 | — | — |
| Primal Scream | 1982 | — | Scottish rock band |
| Primitive Knot | 2014 | — | — |
| Prinzhorn Dance School | 2004 | — | — |
| Pro-jekt | January 2001 | — | — |
| Procol Harum | 1967 | 2022 | — |
| Profiler | 2017 | — | — |
| ProjeKct One | 1 December 1997 | 4 December 1997 | — |
| Propellerheads | 1995 | 2003 | — |
| Prospekt | 2008 | — | — |
| Protectors | 1 July 2009 | — | — |
| Psapp | 2002 | — | — |
| Psychic TV | 1981 | 13 March 2020 | — |
| Psychlona | 2016 | — | — |
| Psython | 2014 | — | — |
| Public Enemy | 1980 | 1992 | — |
| Public Image Ltd | 1978 | — | — |
| Public Service Broadcasting | 2010 | — | British rock four‐piece |
| Pull Tiger Tail | 2 February 2006 | 2009 | — |
| Pulp | 1978 | — | — |
| Punishment of Luxury | December 1976 | — | — |
| Pure Reason Revolution | 2003 | — | — |
| Puressence | January 1991 | — | — |
| Pythia | 2007 | — | — |
| Qlowski | 2015 | — | — |
| Qrixkuor | 2011 | — | — |
| Quality Drivel | 1980 | 1982 | — |
| Quartz | 1974 | 2011 | — |
| Quasar | 1979 | — | — |
| Queen | 27 June 1970 | — | UK rock group |
| Queen + Paul Rodgers | 2005 | 14 May 2009 | — |
| Queen Cult | 1 March 2018 | — | — |
| QueenAdreena | 1999 | — | — |
| Quickspace | 1994 | 2005 | — |
| Quiet Sun | 1970 | 1975 | — |
| Quintessence | April 1969 | 1975 | — |
| Q‐Tips | 1979 | 1982 | — |
| R.P.C | November 2021 | — | — |
| R.S.I | 2003 | — | — |
| Rachel Unthank & the Winterset | 2004 | August 2009 | — |
| Radio Stars | 1977 | 1979 | — |
| Radiohead | 1991 | — | — |
| Raging Speedhorn | 1999 | — | — |
| Ragnarok | 1988 | — | — |
| Rainbow | 1974 | — | UK hard rock/heavy metal band |
| Raining Forest | 2007 | — | — |
| Ramleh | 1982 | — | — |
| Rampage Brigade | 1992 | — | — |
| Rancid Hell Spawn | 1988 | — | — |
| Random Hand | 2002 | — | — |
| Rannoch | 2004 | — | — |
| Rare Bird | 1969 | 1975 | — |
| Rasta4Eyes | 2008 | — | — |
| Rat Hole | 5 June 2023 | — | — |
| Rattle | 2011 | — | — |
| Raven | 1975 | — | UK metal band |
| Ravenface | 2007 | — | — |
| Raving Fatties | 1979 | 1979 | — |
| Raw Noise | 1983 | — | — |
| Raygun | 2006 | 2010 | — |
| Razorcuts | 1985 | 1989 | — |
| Razorlight | 2002 | — | — |
| Razors Edge | July 1990 | — | — |
| Red Alert | 1979 | — | — |
| Red Dawn | 2002 | — | — |
| Red Flag 77 | 1990 | — | — |
| Red Guitars | October 1982 | — | — |
| Red Letter Day | 1983 | — | — |
| Red London | 1981 | — | — |
| Red Lorry Yellow Lorry | 1981 | — | — |
| Red Rum | 2011 | — | — |
| Red Sun Revival | 2011 | — | — |
| Redwood | 1989 | May 2004 | — |
| Reef | 1993 | 2013 | English rock band |
| Reign of Fury | 2006 | — | — |
| Reinforced | 1 September 2006 | — | — |
| Rema‐Rema | 1979 | 1980 | — |
| Renaissance | 1969 | 2002 | progressive rock band from England |