| Company Box Ltd | Deal | 2022 |
| Company Chemists Association Limited | Nottingham | 1898 |
| Company Debt Solutions Online Limited | Wilmslow | 2024 |
| Company Formations (Belfast) Limited | Belfast | 2011 |
| Company HQ Limited | Southend-On-Sea | 2016 |
| Company Identity Protection Limited | Liversedge | 2010 |
| Company Models Limited | Reading | 2025 |
| Company of Catholic Companions Ltd | Stansted | 2023 |
| Company of Veteran Motorists Limited(The) | Colchester | 1935 |
| Company Prefer Ltd | London | 2024 |
| Company Sales Limited | London | 1984 |
| Company Setups Group Ltd | Salford | 2017 |
| Company Triage Ltd | Blackburn | 2021 |
| Company’S Great Ltd | London | 2018 |
| Compare Airport Parking Extras Limited | Swindon | 2024 |
| Compare Airport Parking Limited | Padiham | 2017 |
| Compare CBD Ltd | Morecambe | 2018 |
| Compare Cosmetic Limited | Basildon | 2024 |
| Compare Funerals Ltd | Bideford | 2020 |
| Compare Home Design Ltd | Chorley | 2020 |
| Compare Home Improvements Ltd | Cardiff | 2019 |
| Compare My Laundry Ltd | London | 2021 |
| Compare My Parking Limited | West Drayton | 2025 |
| Compare the Gold Limited | London | 2023 |
| Compare the Mandap Ltd | Bagshot | 2011 |
| Compare the Wholesaler Limited | Northwich | 2014 |
| Compare Travel Services Limited | High Wycombe | 2020 |
| Compare Yields Ltd | Manchester | 2022 |
| Comparethecoffin.Com Limited | Harrow | 2011 |
| Comparethegym Ltd | Nottingham | 2019 |
| Comparing Food Limited | Kington | 2007 |
| Compasia United Kingdom Ltd | Canvey Island | 2021 |
| Compass - Together for a Good Society Ltd | | 2005 |
| Compass and Canvas Limited | London | 2025 |
| Compass Blinds Limited | Norwich | 2019 |
| Compass Campaigns Ltd | London | 2019 |
| Compass Consultancy Services Ltd | Cullompton | 2015 |
| Compass Design Limited | Teignmouth | 2018 |
| Compass Disability Services | Taunton | 2001 |
| Compass Family Mediation Limited | London | 2023 |
| Compass Holidays Ltd | Cheltenham | 2007 |
| Compass Point Assist Limited | London | 2025 |
| Compass Rehabilitation Ltd | Lutterworth | 2020 |
| Compass Rufford Ltd | Stourbridge | 2025 |
| Compass Security Oldco Group Limited | Rubery | 2007 |
| Compass Security Oldco Holdings Limited | Rednal | 2005 |
| Compass Security Oldco Investments Limited | Rubery | 2007 |
| Compass Synergy Ltd | Lytham St.Annes | 2024 |
| Compassion Acts Limited | Southport | 2016 |
| Compassion Belfast | Belfast | 1993 |
| Compassion Care Training Ltd | Portsmouth | 2017 |
| Compassion for Children Services Limited | London | 2025 |
| Compassion for Earth & Education Ltd | Egham | 2024 |
| Compassion for the Land Ltd | St. Helens | 2023 |
| Compassion Global Alliance Ltd | Portsmouth | 2025 |
| Compassion Group Network | Ballymena | 2015 |
| Compassion in Action | Warrington | 2009 |
| Compassion in World Farming (Trading Company) Limited | Surrey | 1994 |
| Compassion in World Farming International | Surrey | 2002 |
| Compassion in World Farming Supporters | Surrey | 1992 |
| Compassion Ministries | Ballymena | 2010 |
| Compassion Outreach Network Ministries | Croydon | 2014 |
| Compassion UK Christian Child Development | Fleet | 1999 |
| Compassionate Care & Support (North East) Limited | Altrincham | 2022 |
| Compassionate Eyes Limited | Staines-Upon-Thames | 2025 |
| Compassionate Heart Ltd | Cambridge | 2012 |
| Compassionate Life Private Ltd | St. Leonards-On-Sea | 2023 |
| Compassionate Revolution Limited | London | 2015 |
| Compassionate Revolution Manchester Ltd | Delph | 2019 |
| Compassionate Staff Ltd | Crawley | 2012 |
| Compassionately Authentic Limited | Hampton | 2020 |
| Compassionis Ltd | Egham | 2025 |
| Compatible Connextions Limited | London | 2020 |
| Compawnion Ltd | Newcastle | 2023 |
| Compcare Compressed Air Ltd | Manchester | 2007 |
| Compendium Biotechnology Ltd | Greater Manchester | 2017 |
| Compendium Escape Rooms Ltd | Bury | 2026 |
| Compensation Claims Funding Limited | Renfrew | 2002 |
| Comperio Consulting Limited | Bolton | 2020 |
| Compete PR Ltd | Bracknell | 2012 |
| COMPETE2CURE Ltd | Markfield | 2024 |
| Competent Cleaners Limited | Ellesmere Port | 2000 |
| Competent Ltd | East-Dulwich | 2019 |
| Competentroofer Limited | London | 2006 |
| Competere Business Consulting Limited | Liverpool | 2025 |
| Competiown Ltd | Bristol | 2024 |
| Competition Entry Service Ltd | 2 Marcus Street | 2019 |
| Competition FOX Limited | London | 2020 |
| Competitiongo Ltd | London | 2021 |
| Competitions Anonymous Limited | Workington | 2026 |
| Competitive Options Limited | Harrow | 2003 |
| Competum Ltd | Doncaster | 2019 |
| Compinfy Ltd | Cardiff | 2025 |
| Complement - Osteo & Physio Ltd | London | 2023 |
| Complementary Health Inspirational Care C.I.C. | Kingswinford | 2017 |
| Complementary Medical Assoc UK Ltd | Paignton | 2025 |
| Complete 24 Ltd | Southend-On-Sea | 2011 |
| Complete Access & Tree Services Limited | Lancaster | 2006 |
| Complete Acoustics Limited | Hornchurch | 2020 |
| Complete Adolescents Provisions Ltd | Bedford | 2018 |