| Caamora | 2005 | — | — |
| Cabaret Voltaire | 1973 | — | — |
| Cable | 1992 | 16 April 1999 | 90s band from Derby, UK |
| Cadaver Club | 2012 | — | — |
| Cadaverous | 1992 | — | — |
| Caecus | 2013 | — | — |
| Cage Fight | 2021 | — | — |
| Cajun Dance Party | 2005 | 2010 | — |
| Calling All Astronauts | 11 November 2011 | — | — |
| Cambion | 2009 | — | — |
| Camel | 1971 | — | UK prog rock band |
| Camera Obscura | 1996 | — | UK indie rock band from Glasgow |
| CANDIDATE23 | July 2010 | — | — |
| Cane Hill Anticult | 12 October 2011 | — | — |
| Capdown | 1997 | — | — |
| Capital Punishment | 2015 | — | — |
| Capricorns | 2003 | — | — |
| Caravan | January 1968 | — | Canterbury group |
| Carcass | 1985 | — | British grindcore/technical death metal |
| Cardiacs | 1977 | 21 July 2020 | — |
| Cardinal Black | 2020 | — | — |
| Carnis | 1992 | 1996 | — |
| Carpool Conversation | 21 February 2010 | — | — |
| Carter the Unstoppable Sex Machine | 1988 | August 1997 | — |
| Case | 1979 | — | — |
| Casey | 1 December 2014 | — | — |
| Cast | 1993 | — | British indie band |
| Casual Nausea | 2012 | — | — |
| Cat Bear Tree | March 2011 | — | — |
| Catatonia | 1992 | 21 September 2001 | Welsh alternative rock band, ~1992–2001 |
| Catharsis | 1990 | — | — |
| Cathedral | 1989 | 2013 | British doom metal band |
| Catherine Wheel | April 1990 | 2000 | UK shoegaze / alternative rock band |
| Cats and Cats and Cats | 2005 | — | — |
| Caïna | 2004 | — | black metal / shoegaze / experimental |
| Cease2Xist | 2010 | — | — |
| Ceiling Demons | 27 September 2011 | — | — |
| Celestial Sanctuary | 2019 | — | — |
| Centiment | 2000 | — | — |
| Central Band of the Royal British Legion | 1944 | — | — |
| Centrefolds | 2010 | — | — |
| Cerebral Bore | 2004 | 2014 | — |
| Cerecloth | 1992 | — | — |
| Chad & Jeremy | 1960 | — | — |
| Chairmen of the Bored | 2011 | — | — |
| Chalk | 2019 | — | — |
| ChameleonsVox | 2009 | — | — |
| Chaos 8 | 2012 | — | — |
| Chaos UK | 1979 | — | — |
| Chariot | 1983 | — | — |
| Charlie | 1971 | 2015 | 70s–80s UK rock band |
| Charlie Goes Electric | 1 October 2014 | — | — |
| Chas & Dave | 1974 | 22 September 2018 | UK pop rock duo of Chas Hodges & Dave Peacock |
| Chateaux | 1981 | 1986 | NWOBHM |
| Chelsea | 1976 | — | UK punk band |
| Cherry White | 2010 | — | — |
| Chicane | 1991 | 1994 | — |
| Chicken Shack | 1965 | — | — |
| Children on Stun | 1991 | 1998 | — |
| China Crisis | 1979 | — | — |
| China Drum | 1989 | 2001 | English punk rock band |
| China Shop Bull | 11 May 2006 | — | — |
| Chocolate | 1993 | 1999 | — |
| Chopper | 1994 | 1998 | — |
| Chorus of Ruin | 1991 | — | — |
| Christ reflection | 2014 | — | — |
| Christie | 1969 | — | English soft rock band |
| Chron Gen | January 1978 | — | — |
| Chumbawamba | 1982 | 2012 | — |
| Church of Satan | 1994 | 1995 | — |
| Church of the Cosmic Skull | 2015 | — | — |
| CHVRCHES | 2011 | — | Glaswegian electronic pop trio |
| Cindytalk | 1982 | — | — |
| Circa Waves | 2013 | — | English indie rock band |
| Circle of Sin | 1983 | 1984 | — |
| Citizen Fish | 1990 | — | — |
| Citizens! | 2010 | — | — |
| Clark‐Hutchinson | 1968 | 1971 | — |
| Class War | 1986 | — | — |
| Claustraphobia | 2001 | — | — |
| Clayhill | 2001 | 2009 | — |
| Clean Bandit | 2008 | — | — |
| Clear Blue Sky | 1968 | — | — |
| Clearlake | January 2000 | — | — |
| Cleavers | 2011 | — | — |
| Cleft | 11 November 2011 | 2016 | UK two piece math‐rock band |
| Click Click | 1982 | — | — |
| Climax Blues Band | 1968 | — | — |
| Clinic | 1997 | — | UK rock band |
| Clock DVA | 1978 | — | — |
| Clocks | 2000 | 2008 | — |
| Clouds | January 1966 | October 1971 | UK 60’s Rock Band |
| Cloven Hoof | 1979 | — | — |
| Cochise | 1970 | 1972 | — |
| Cock Sparrer | 1972 | — | — |
| Cockney Rejects | 1978 | — | — |
| Code | 2002 | — | black metal/progressive metal from UK |
| Coded Marking | 2021 | — | — |
| Coffin Mulch | 2018 | — | — |
| Cognizance | 2012 | — | — |
| Coil | 1982 | 13 November 2004 | UK cross‐genre industrial group |
| Cold Crypt | 2012 | — | — |
| Cold in Berlin | 2010 | — | — |
| Cold River Lady | 1970 | 1992 | — |
| Coldplay | September 1996 | — | — |
| Collapsed Lung | 1992 | — | — |
| Colosseum | 1968 | — | progressive rock band |
| Colosseum II | 1975 | 1978 | — |
| Colourbox | 1982 | 1987 | — |
| Combat 84 | 1981 | 1984 | — |
| Comet Gain | 1992 | — | — |
| Common Gods | June 2012 | — | — |
| Complex | 1968 | — | — |
| Conan | 2006 | — | UK doom |
| Concrete Sox | 1984 | 2013 | — |
| Condemned 84 | 1980 | — | — |
| Conflict | 1981 | — | — |
| Confusion Corporation | 1993 | — | — |
| Congenital Abnormalities | 2015 | — | — |
| Conjurer | 2014 | — | — |
| Conquering Animal Sound | 2008 | — | — |
| Consecration | 2010 | — | — |
| Consumed | 1994 | 2003 | — |
| Coprocephalic Mutation | 2017 | — | — |
| Corinthians | 2004 | 2006 | — |
| Cornershop | 1991 | — | — |
| Corvus | 2007 | — | — |
| Cosmonauts | 2010 | — | — |
| Countless Skies | 2012 | — | — |
| Country Teasers | 1993 | — | — |
| Counts of the Netherworld | 22 April 2008 | — | — |
| Courteeners | 2006 | — | — |
| Cousteau | 1998 | 2005 | UK indie rock band |
| Coves | 2011 | — | — |
| Cracked Actors | 1979 | 1981 | — |
| Crackout | 1997 | 2005 | — |
| Cradle of Filth | 1991 | — | — |
| Cranes | 1986 | — | British dream pop band |
| Crash Paris | September 2011 | — | — |
| Crass | 1977 | 12 July 1984 | — |
| Craven Idol | 2005 | — | — |
| Crazy Arm | 2005 | — | — |
| Cream | July 1966 | November 1968 | British 1960s rock supergroup |
| Creaming Jesus | 1988 | — | — |
| Credit to the Nation | 1991 | — | — |
| Cressida | 1969 | September 1970 | — |
| Crimson Tears | 2003 | — | — |
| Crippled Black Phoenix | 2004 | — | UK rock band |
| Crisis | 1977 | — | 1970s British punk band |
| Crispy Ambulance | 1977 | — | — |
| Cristobal and the Sea | 1 September 2012 | — | — |
| Crocodile God | 1992 | — | — |
| Crom Dubh | 2003 | — | — |
| Cronos | 1988 | — | British metal band with Conrad "Cronos" Lant |
| Crowns | 2010 | — | — |
| Cruciamentum | 2005 | — | — |
| Crushed Butler | 1969 | 1971 | — |
| Cryptic Shift | 2013 | — | — |
| Cryptworm | 2014 | — | — |
| Crystal Balloon | October 2013 | — | — |
| Crystal Fighters | 2007 | — | — |
| Crywank | 2009 | — | — |
| Cubanate | 1992 | — | British industrial rock / electro-industrial group |
| CUD | 1987 | — | — |
| Cult Maniax | 1978 | — | — |
| Cultural Amnesia | 1979 | — | — |
| Culture Club | 1981 | — | English pop group |
| Currahee | 2006 | 2012 | — |
| Current 93 | 1982 | — | — |
| Curse of Dawn | June 2009 | — | — |
| Curve | 1989 | 31 January 2005 | UK shoegaze/electro duo |
| Curved Air | 1970 | — | — |
| Curxes | 10 October 2010 | — | — |
| Cut Out Shapes | November 2009 | — | — |
| Cutting Crew | 1985 | — | — |
| Cutting Pink With Knives | 2004 | 2008 | — |
| Cwfen | 2022 | — | — |
| CWT | 1973 | 1974 | Hard Rock, Heavy Psych, UK |
| Cyan | 1984 | — | — |
| Cybernetic Witch Cult | 2013 | — | — |
| Cymande | 1971 | 1974 | British funk group |