| Colorbeast Limited | London | 2020 |
| Colorgen Limited | Bury St. Edmunds | 2002 |
| Colorglo UK Limited | London | 2018 |
| Colorism Limited | London | 2018 |
| Colormarket UK Ltd | Walsall | 2024 |
| Coloroom Studio Ltd | Glasgow | 2012 |
| Colors London Ltd | London | 2013 |
| Colors Production Limited | London | 2023 |
| Coloseum Limited | Birmingham | 2018 |
| Colosis Ltd | Mitcham | 2019 |
| Colossal Influence Limited | London | 2010 |
| Colosseum Hairdressing Limited | Doncaster | 2003 |
| Colossium Limited | Birmingham | 2018 |
| Colossus K9 Ltd | Keighley | 2017 |
| Colostomy UK | Wokingham | 2005 |
| Colour & Beauty Limited | Sutton Coldfield | 2013 |
| Colour 'N' Curls Limited | Huddersfield | 2022 |
| Colour Analysis Ltd | London | 2024 |
| Colour and CUT Limited | Northwich | 2026 |
| Colour Bar.Ealing Ltd | London | 2017 |
| Colour Black Tattoo Studio Ltd | Clitheroe | 2025 |
| Colour Bomb Ltd | Harrow | 2018 |
| Colour Boutique Ltd | Chorley | 2018 |
| Colour Boutique Nail Bar Ltd | Barnet | 2022 |
| Colour Box Hair Limited | St. Helens | 2013 |
| Colour by Rosie Ltd | Frome | 2020 |
| Colour Care by Yorkshire's Finest Limited | Liverpool | 2014 |
| Colour Coat (South West) Limited | Chippenham | 2021 |
| Colour Collective Salon Ltd | Wirral | 2024 |
| Colour Counsellors Limited | Stroud | 1970 |
| Colour Entertainment Ltd | Birmingham | 2023 |
| Colour House Interiors Ltd | Caterham | 2021 |
| Colour Interiors Limited | London | 2015 |
| Colour Lounge at the Spa Ltd | Airdrie | 2019 |
| Colour Luxe Ltd | Dorchester | 2022 |
| Colour ME Bootiful Ltd | Londonderry | 2019 |
| Colour ME Crazy (Shepperton) Ltd | Ashford | 2021 |
| Colour ME Lush KT Ltd | Gravesend | 2022 |
| Colour ME Lush Limited | London | 2013 |
| Colour ME Posh Limited | London | 2022 |
| Colour ME Safe UK Ltd | London | 2025 |
| Colour Nail Bar (BG) Limited | Woodford Green | 2019 |
| Colour Nails & Beauty Limited | Eastleigh | 2024 |
| Colour Nails & Spa Ltd | Airdrie | 2023 |
| Colour Nails Ltd | London | 2023 |
| Colour of Research Limited | Croydon | 2020 |
| Colour Outside the Lines Community Interest Company | Grimsby | 2024 |
| Colour Palette by Tassy Ltd | Ruislip | 2022 |
| Colour Passion 12 Ltd | London | 2022 |
| Colour Passion 18 Ltd | Aylesbury | 2026 |
| Colour PUB Ltd | London | 2016 |
| Colour Riot Nails Ltd | London | 2018 |
| Colour SIX Ltd | London | 2024 |
| Colour Sparks Therapy Ltd | Rushden | 2018 |
| Colour Vision U.K Limited | Bristol | 2023 |
| Colour Workshop Limited | Stanmore | 2026 |
| Coloured by Madison Limited | Ivybridge | 2026 |
| Coloured Linen Hire Limited | Nottingham | 2021 |
| Colouredsoul Ltd | St. Andrews | 2016 |
| Colourful Beauty Salon Limited | Stanford-Le-Hope | 2026 |
| Colourful Nails Limited | Essex | 2020 |
| Colourful Pricks Limited | Biggar | 2022 |
| Colourful Solutions (L & D) Limited | Macclesfield | 2015 |
| Colourful Thoughts Ltd | London | 2020 |
| Colourfull Kitchens Limited | Leeds | 2014 |
| Colourhouse International Ireland Ltd | Belfast | 2021 |
| Colourhouseuk Ltd | London | 2024 |
| Colourlounge Hair Ltd | Fleetwood | 2014 |
| Colourmatch Mobile Auto Paint Repairs Ltd | Brigg | 2014 |
| Colourprint (NW) Limited | Maghull | 2021 |
| Colours & Beauty Limited | Lancashire | 2001 |
| Colours & Curls Limited | Glasgow | 2003 |
| Colours by Tracy Limited | Falkirk | 2022 |
| Colours Hair and Nails Limited | Loughborough | 2014 |
| Colours Hair Limited | Billericay | 2013 |
| Colours Hair Salon Ltd | Shotts | 2011 |
| Colours Hair Studio Ltd. | Fraserburgh | 2006 |
| Colours Hairdressing Limited | Ammanford | 2004 |
| Colours of Solidarity Ltd | London | 2026 |
| Colours Prestwick Limited | Prestwick | 2008 |
| Colours With Katie Ltd | Lossiemouth | 2024 |
| Colours Youth Network Ltd | Hounslow | 2020 |
| Coloursure Filling Limited | Formby | 2020 |
| Colpez Ltd | Maidstone | 2026 |
| Colpod Movement Limited | Chesterfield | 2024 |
| Colquite Estate Limited | Penzance | 1994 |
| Colson Blake Ltd | Hainault Business Park | 2023 |
| Colson Home Ltd | Horley | 2023 |
| Colspace Limited | Dorking | 2014 |
| Colt (London) Limited | Ivybridge | 1990 |
| Colt Estates Limited | Canterbury | 1937 |
| Colt Trading Limited | Crawley | 2017 |
| Colter Steels Limited | Willenhall | 1981 |
| Coltness Car Club | Glasgow | 2001 |
| Colton Commercials Haulage Limited | Hornchurch | 1994 |
| Colton Gardens Ltd | Maidstone | 2010 |
| Colton's Groomers Limited | Northamptonshire | 2021 |
| Coltrad Ltd. | Wrotham Heath | 1990 |
| Coltron Computers Limited | Luton | 2014 |
| Coltspring School of Riding Limited | London | 1975 |