| Comber Holdings Limited | East Grinstead | 2025 |
| Combesgate Limited | Newport | 2010 |
| Combi Holdings Limited | West Bromwich | 2021 |
| Combicut Investments Limited | Reading | 2010 |
| Combined Creations Ltd | Loughborough | 2022 |
| Combined Financial Strategies Limited | Bath | 2008 |
| Combined Global Limited | London | 2022 |
| Combined Holdings Limited | Ruislip, | 2025 |
| Combined London Colleges (General Partner) Limited | London | 1998 |
| Combined Mortgage and Protection Advice Ltd | Northwich | 2023 |
| Combined Nuclear Pension Plan Trustees Limited | Moor Row | 2006 |
| Combined Structures Group Limited | London | 2024 |
| Combined Structures Limited | London | 2024 |
| Comcap 1 Limited | Winchester | 2015 |
| Comcap 2 Limited | Winchester | 2015 |
| Comcap 3 Limited | Winchester | 2015 |
| Comcar Ltd | Newry | 2024 |
| Comcast Bidco Holdings Limited | Manchester | 2018 |
| Comcast Bidco Limited | Manchester | 2018 |
| Comcast Funding Co 1 Limited | Isleworth | 2026 |
| Comcast Funding Co 2 Limited | Isleworth | 2026 |
| Comcast International Holdings UK Limited | London | 2016 |
| Comco Holdings Limited | Belfast | 2022 |
| Comcor Capital Drake's Island Lending Limited | Ashford | 2023 |
| Comcor Capital Ltd | Ashford | 2023 |
| Comcor Group Ltd | Ashford | 2023 |
| Comcorde Limited | London | 2022 |
| Come to Fruition Holdings Ltd | Telford | 2022 |
| Comel Export Services Ltd. | Eastbourne | 1955 |
| Comer Group Holdings Limited | Bury St Edmunds | 2022 |
| Comer Holdings Ltd | Hadspen | 2026 |
| Comera Defence and Ordnance Group Ltd | Bristol | 2025 |
| Comerford's Limited | London | 1936 |
| Comes Animae Ltd | Liverpool | 2022 |
| Comet Business Consulting Ltd | London | 2021 |
| Comet International Holding Ltd | London | 2023 |
| Comet Midco II Limited | Birmingham | 2023 |
| Comet Midco Limited | London | 2017 |
| Comet Trustee Company Limited | Reading | 2003 |
| Comet Wealth Ltd | Yateley | 2007 |
| Comfg Holdings Ltd | Wrexham | 2021 |
| Comfordt Holdings Limited | Leominster | 2025 |
| Comforin Funding Limited | Poulton | 2025 |
| Comfort Group Holdings Ltd | South Croydon | 2026 |
| Comfort Holdings Limited | Birmingham | 2025 |
| Comfort Residential and Commercial Finance Ltd | Derby | 2022 |
| Comfort Shoe Warehouse Holdings Limited | Kidderminster | 2022 |
| Comfortbricks Ltd | London | 2019 |
| Comfortech Ltd | Hemel Hempstead | 2023 |
| Comfrey Farm Holdings Ltd | Driffield | 2025 |
| Comfydom Ltd | London | 2025 |
| Comhar Capital Limited | Leeds | 2017 |
| Comhar Training Limited | Belfast | 2017 |
| Comicsure Limited | Colchester | 2024 |
| Comilak Limited | London | 2016 |
| Comilla Underwriting Limited | Grantham | 2009 |
| Cominvest Systems (UK) Limited | Southampton | 1984 |
| Comisiones Mundiales Ltd | Kington | 2022 |
| Comitas Financial Solutions Limited | Hope Valley | 2022 |
| Comitia Holdings Limited | Swindon | 2026 |
| Comland Holdings Limited | Bourne End | 2000 |
| Comland Leisure Limited | Bourne End | 2007 |
| Comland Wessex Limited | Bourne End | 2014 |
| Comline Holdings Limited | Bedford | 2016 |
| Comma Partners (Holdings) Limited | London | 2025 |
| Commagility Holdings Ltd | Northampton | 2017 |
| Command Credit Ltd | London | 2023 |
| Command Financial Group Ltd | London | 2025 |
| Command Group UK Limited | London | 2026 |
| Commander Asset Management Limited | London | 2001 |
| Commander Investments Limited | Leigh-On-Sea | 2019 |
| Commendis Ltd | Birkenhead | 2010 |
| Commercia Specialist Finance Ltd | Leicester | 2026 |
| Commercial & Asset Management Limited | Malpas | 2016 |
| Commercial & Business Funding Limited | Shipley | 2019 |
| Commercial 1 Limited | Swanley Village | 2002 |
| Commercial Acceptances Limited | London | 1983 |
| Commercial Advice Hub Limited | Sheffield | 2024 |
| Commercial Advisory London Limited | London | 2023 |
| Commercial AID Training Ltd | Stafford | 2014 |
| Commercial and Asset Lending Ltd | Johnstone | 2018 |
| Commercial and Construction Insurance Brokers Limited | Mansfield | 1998 |
| Commercial and Corporate Finance Ltd | London | 2022 |
| Commercial and General Limited | Teddington | 2000 |
| Commercial Associates (Holdings) Limited | Wigston | 2024 |
| Commercial Buildings Bromsgrove Holdings Limited | Coventry | 2026 |
| Commercial Business Group Ltd | Leyland | 2025 |
| Commercial Capital Partners Ltd | Cardiff | 2024 |
| Commercial Cashflow Limited | Weston-Super-Mare | 2016 |
| Commercial Connect Limited | Ballymena | 2023 |
| Commercial Enterprise Lettings Limited | Doncaster | 2024 |
| Commercial Excellence Limited | Banbridge | 2010 |
| Commercial Expert Limited | Newton Aycliffe | 2008 |
| Commercial Express Quotes Limited | Brierley Hill | 1999 |
| Commercial Facilities Management Limited | Glasgow | 2024 |
| Commercial Finance (2010) Limited | Manchester | 2007 |
| Commercial Finance (Midlands) Ltd | Malvern | 2017 |
| Commercial Finance Associates Limited | Grantham | 2006 |
| Commercial Finance Brokers UK Limited | Woodbridge | 2007 |
| Commercial Finance Consultants Ltd | Weston-Super-Mare | 2016 |