| Commodity Centre Europe Limited | Witham | 2016 |
| Commodity Centre Limited | Witham | 2005 |
| Commodity Centre UK Limited | Witham | 1992 |
| Commodity Store Limited | Witham | 2017 |
| Common Cars UK Ltd | Morden | 2018 |
| Common Good Transport Limited | Loughton | 2025 |
| Commonsense and Airmanship Always Apply Ltd | Lancing | 2017 |
| Commonwealth Coaches Limited | Uxbridge | 2007 |
| Commonwealth Ports and Maritime Limited | London | 2025 |
| Commpilot Services Ltd | Guildford | 2016 |
| Comms Transport Services Ltd | Romford | 2023 |
| Commsevolution Ltd | Cirencester | 2011 |
| Communication, Mailing and Database Services Limited | Clydebank | 1992 |
| Communities First Wessex | Havant | 2012 |
| Community Active Travel Limited | Bridgend | 2020 |
| Community Active Travel Services Ltd | Blackwood | 2021 |
| Community Ambulance Service Ltd | Stratford | 2003 |
| Community Care Transportation Ltd | Ilford | 2026 |
| Community Drivers - Frome CIC | Frome | 2024 |
| Community Drop OFF Ltd | London | 2025 |
| Community Mini-Cab Services Limited | London | 1998 |
| Community Rail Lancashire Ltd | Acrrington | 2016 |
| Community Rail Network | Huddersfield | 2001 |
| Community Rides Ltd | Littlehampton | 2026 |
| Community Self Storage Ltd | Coatbridge | 2024 |
| Community Transport (South West) Limited | Yeovil | 2006 |
| Community Transport (Swadlincote) | Swadlincote | 1994 |
| Community Transport B&H (Trading) Limited | Brighton | 2002 |
| Community Transport Calderdale Ltd | Halifax | 2002 |
| Community Transport for the Lewes Area | Newhaven | 2002 |
| Community Transport Glasgow | Glasgow | 2009 |
| Community Transport Northwest Limited | Rochdale | 2015 |
| Community Transport Services Birmingham Ltd | Birmingham | 2015 |
| Community Transport Solutions Ltd | Loughton | 2020 |
| Community Transport Stafford & District | Stafford | 2002 |
| Community Transport Sussex Trading Limited | North Chailey | 2017 |
| Communitytransportservices.Co.Uk Limited | London | 2009 |
| Commute Connect Limited | Glasgow | 2023 |
| Comodality Limited | Westcliffe-On-Sea | 2020 |
| Comouk Trust | Leeds | 2002 |
| COMP1CLUTCH Ltd | Tipton | 2010 |
| Compact Motion Limited | Bristol | 2015 |
| Compania MLS Ltd | Stoke-On-Trent | 2026 |
| Companies Transport (& Property) Management Limited | London | 2009 |
| Companion Driving Services Ltd | Bersted Park | 2016 |
| Companion Logistics Limited | Staines-Upon-Thames | 2024 |
| Companion Mobility Limited | Sheffield | 2024 |
| Companionship Supported Travel Ltd | Kingston Upon Thames | 2023 |
| Company by Duez Ltd | Coventry | 2022 |
| Company C 313 Ltd | Bradford | 2026 |
| Company C&V Ltd | Doncaster | 2020 |
| Company Couriers Limited | Bradford | 2012 |
| Company Couriers Yorkshire Ltd | Bradford | 2025 |
| Company Light Ltd | Durham | 2025 |
| Company Moves and Storage Limited | Hook | 2013 |
| Company of Proprietors of Whitchurch Bridge (the) | Southampton | 1981 |
| Compare Airport Parking Services Limited | Cardiff | 2026 |
| Compare and Park Ltd | Horley | 2017 |
| Compare Elite Parking Ltd | London | 2025 |
| Compare Minibus Travel Ltd | Middlesbrough | 2021 |
| Compare My Move Limited | Cardiff | 2012 |
| Compare Parking Needs Ltd | Crawley | 2017 |
| Compare Parking Prices Ltd | Slough | 2022 |
| Compare Premier Parking Ltd | Wolverhampton | 2026 |
| Compare the Car Parking Ltd | Henley-On-Thames | 2023 |
| Compareasy Limited | London | 2021 |
| Comparepost.Com Limited | Birmingham | 2013 |
| COMPAS75 Limited | Redditch | 2015 |
| Compass & Crown Global Limited | Stockport | 2025 |
| Compass (Barrhead) Ltd. | Dundee | 2008 |
| Compass 24 Hour Breakdown Recovery Ltd | Ferryhill | 2021 |
| Compass Aviation Services Limited | Chepstow | 2016 |
| Compass Cabs Ltd | Coventry | 2016 |
| Compass Cabs Totnes Ltd | Torquay | 2023 |
| Compass Cargo Logistics Ltd | London | 2024 |
| Compass Cars 247 Limited | Rushden | 2009 |
| Compass Coach Travel Ltd | Belfast | 2024 |
| Compass Community Transport Ltd | Sunderland | 2003 |
| Compass Consolidation Limited | Hockley | 1993 |
| Compass Courier Services Limited | Newcastle | 2007 |
| Compass Event Services Ltd | Pinner | 2025 |
| Compass Executive Cars (UK) Ltd | Wokingham | 2012 |
| Compass Executive Cars Berkshire Ltd | Wokingham | 2026 |
| Compass Executive Travel Ltd | Liversedge | 2020 |
| Compass Freight Group Limited | Wellingborough | 2026 |
| Compass Logistics International Ltd | Slough | 2017 |
| Compass Logistics Services Ltd | Nottingham | 2019 |
| Compass Minerals Storage & Archives Limited | London | 1981 |
| Compass Mobility Consultants Limited | Chesterfield | 2006 |
| Compass One Couriers Ltd | Barnsley | 2024 |
| Compass Points Ltd | Wirral | 2007 |
| Compass Radio Cars Ltd | Slough | 2007 |
| Compass Rose Charters Ltd | Yell | 2022 |
| Compass Royston Travel Limited | Newcastle Upon Tyne | 1998 |
| Compass Shipping & Trading (Chandlery) Limited | Palmers Green | 1990 |
| Compass Taxis Limited | Rye | 2020 |
| Compass Transport Ltd | St. Leonards-On-Sea | 2022 |
| Compass Travel (Drifter) Ltd | Great Yarmouth | 1998 |
| Compass Travel (Sussex) Ltd | Worthing | 2000 |
| Compass Travels and Support Services Ltd | Bristol | 2022 |