| The Orchids | 1986 | — | — |
| The Ordinary Boys | 2004 | — | — |
| The Orielles | 1 January 2013 | — | — |
| The Oscillation | 2006 | — | UK drone ambient rock |
| The Others | 1964 | 1968 | — |
| The Others | 2002 | — | — |
| The Outcasts | June 1977 | — | — |
| The Outlaws | 1961 | 1965 | — |
| The Outsiders | 1975 | 1979 | — |
| The Owl Service | 2006 | — | — |
| The Pale Fountains | 1980 | 1985 | — |
| The Palookas | 1985 | — | — |
| The Partisans | 1979 | — | — |
| The Passage | March 1978 | 1983 | — |
| The Passions | 1978 | 1983 | — |
| The Pastels | 1982 | — | — |
| The Peddlers | 1964 | 1976 | — |
| The Penguin Party | 14 February 2009 | — | — |
| The Phantom Light | October 2009 | — | — |
| The Pigeon Detectives | 2002 | — | — |
| The Pineapple Thief | 1999 | — | English progressive rock band |
| The Pipettes | 2003 | 2011 | — |
| The Piranhas | 1977 | 1981 | — |
| The Pirate Ship Quintet | 1 May 2006 | — | — |
| The Plague | 1976 | — | — |
| The Planet Wilson | 1985 | — | — |
| The Plight | 2004 | 2011 | — |
| The Plugs | 2000 | — | — |
| The Pogues | 1982 | 2014 | Irish‐British Celtic punk band |
| The Police | 1977 | 2008 | British rock band |
| The Popguns | 1986 | — | — |
| The Prats | 1977 | 1981 | — |
| The Pre New | 1 April 2010 | — | — |
| The Pretty Things | 1963 | — | English rock band |
| The Primary 5 | 2003 | 2009 | — |
| The Primitives | July 1985 | — | — |
| The Primitives | 1964 | — | — |
| The Prodigy | 5 October 1990 | — | UK electronic group, main member Liam Howlett |
| The Professionals | 1978 | 1982 | — |
| The Psychedelic Furs | February 1977 | — | — |
| The Qemists | 2004 | — | — |
| The Quails | 2006 | — | — |
| The Quarrymen | 1956 | — | — |
| The Quireboys | 1984 | — | — |
| The Ragamuffins | 2008 | — | — |
| The RAH Band | 1977 | — | — |
| The Raincoats | 1977 | — | — |
| The Rakes | 2002 | 22 October 2009 | — |
| The Rascals | 2007 | August 2009 | — |
| The Rats | 1976 | — | — |
| The Raven Age | 2012 | — | — |
| The Real People | 1988 | — | — |
| The Real Thing | 1970 | — | British soul group formed in the 1970s |
| The Real Tuesday Weld | 2000 | — | — |
| The Rebels | 1977 | 1980 | — |
| The Record Players | 1977 | — | — |
| The Reelers | 1 May 2011 | — | — |
| The Reindeer Section | 2001 | 2002 | — |
| The Repeat Offenders | 1 June 2013 | — | — |
| The Revillos | 1979 | 1985 | — |
| The Revolving Paint Dream | 1983 | — | — |
| The Reytons | 1 January 2017 | — | — |
| The Rezillos | 1976 | — | — |
| The Rifles | 2004 | — | — |
| The Riot Squad | 1964 | 1969 | — |
| The Rock Orchestra | 2020 | — | — |
| The Rockin' Vickers | 1963 | 1967 | — |
| The Rockin’ Berries | 1961 | — | — |
| The Rolling Stones | 1962 | — | — |
| The Rubettes | 1973 | — | — |
| The Rumble Strips | 2004 | 2009 | — |
| The Rumour | 1976 | 1980 | — |
| The Rusty Knives | 10 September 2009 | — | — |
| The Rutles | 1975 | 2002 | — |
| The Ruts | 1976 | 1983 | — |
| The S-Haters | 1976 | 1985 | — |
| The Safety Fire | 2006 | 2015 | — |
| The Scabs | 1978 | 1979 | — |
| The Scarecrows | 1982 | 1987 | — |
| The Screaming Blue Messiahs | 1984 | 1990 | — |
| The Scrotum Poles | 1978 | 1980 | — |
| The Sea The Sea | 12 March 2012 | — | — |
| The Seahorses | 1996 | February 1999 | — |
| The Searchers | 1960 | 27 June 2025 | — |
| The Secret | 1977 | 1980 | — |
| The Selecter | 1979 | — | 2 Tone ska group |
| The Sensational Alex Harvey Band | August 1972 | October 1977 | — |
| The Servants | 1985 | 21 August 1991 | — |
| The Shadow Project | 1 October 2003 | — | — |
| The Shadowcops | 20 September 2004 | — | — |
| The Shadows | October 1959 | — | British pop/rock band that once backed Cliff Richard |
| The Shamen | 1986 | 1999 | — |
| The Shores | January 2011 | — | — |
| The Shortwave Set | 2003 | — | — |
| The Shreds | 1991 | — | — |
| The Siddeleys | 1986 | — | — |
| The Silencers | 1986 | — | — |
| The Sisterhood | 1986 | 1986 | — |
| The Sisters of Mercy | 1980 | — | — |
| The Slits | 1976 | 2010 | — |