| Colley’S Transport Logistics Limited | Wigan | 2026 |
| Colliard 315 Limited | London | 2022 |
| Collicare Logistics Limited | London | 2021 |
| Collier Haulage (South Wales) Limited | Pontypool | 2009 |
| Collier Haulage Limited | Cowdenbeath | 2006 |
| Colliers Executive Travel Ltd | Liverpool | 2025 |
| Colliers Launches Thames Boat Hire Limited | Isleworth | 2014 |
| Colliery & Village Taxis Limited | Sunderland | 2024 |
| Collin Moran and SON Ltd | Glasgow | 2021 |
| Collingbourne Effective Ltd | Leicester | 2014 |
| Collings & Sons Logistics Ltd | Ivybridge | 2019 |
| Collings Storage Limited | Ingatestone | 2014 |
| Collingwood Taxis Limited | Morecambe | 2005 |
| Collins & Sons Haulage Ltd | Northampton | 2021 |
| Collins and Co UK Ltd | Wednesbury | 2025 |
| Collins Coaches Limited | Ware | 2024 |
| Collins Distribution Limited | Renfrew | 2012 |
| Collins Earthworks (Transport) Limited | Ripley | 2018 |
| Collins Haulage Limited | Welwyn Garden City | 2011 |
| Collins Nicholas 0666 Ltd | Weston Super Mare | 2016 |
| Collins Pilotage Services Limited | Bromborough | 2014 |
| Collins River Enterprises Limited | London | 1999 |
| Collins Transport Ltd | Knottingley | 2026 |
| Collins Transport Solutions Limited | Plymouth | 2022 |
| Collins Vehicle Movements Ltd | London | 2019 |
| Colliston Cabs Ltd | Arbroath | 2025 |
| Collo Cars Ltd | Gotham | 2013 |
| Colmac Couriers Ltd | Larbert | 2023 |
| Colmac Logistics Ltd | Liverpool | 2024 |
| Colman Transport Limited | Worksop | 1991 |
| Colmark Transport Limited | Hednesford, Cannock | 2002 |
| Colmour Limited | Glasgow | 1949 |
| Coln Valley Cabs Limited | Cirencester | 2003 |
| Colnago Ltd | Preston | 1998 |
| Colnbrook Couriers Ltd | Slough | 2019 |
| Colnbrook Estates Limited | Slough | 1968 |
| Colnbrook Holdings Ltd | Slough | 2024 |
| Colne Cargo Transport Services Limited | Halstead | 1997 |
| Colne Distribution Ltd | Bedford | 2012 |
| Colne Maintenance Dredging Limited | Colchester | 2019 |
| Colne Valley & Halstead Railway Company Limited | Halstead | 1993 |
| Colne Valley Aviation Limited | Earls Colne | 2017 |
| Colne Valley Diesels Limited | Castle Hedingham, Halstead | 1995 |
| Colne Valley Railway Company Limited | Cambridge | 1974 |
| Colne Valley Railway Enterprises Limited | Essex | 1999 |
| Colne Valley Shipping Limited | Chelmsford | 2000 |
| Colnside Executive Cars Ltd | High Wycombe | 2005 |
| Colocool Ltd | Wakefield | 2026 |
| Cologistic Ltd | Doncaster | 2014 |
| Colonel Stephens Railway Enterprises Limited | Kent | 1991 |
| Colorama Pharmaceuticals Limited | Stoke-On-Trent | 1982 |
| Colors Taxis Ltd | Durham | 2006 |
| Colors Transport Ltd | Northampton | 2021 |
| Colour Store Limited | Sussex | 1965 |
| Colours Travel Centre Limited | Manchester | 2006 |
| Colourwind Limited | London | 2018 |
| Colplan Engineering Limited | Manchester | 1976 |
| Colson Company (UK) Limited | Luton | 2014 |
| Colson Transport Limited | Heanor | 2006 |
| Colsons Grab and Plant Hire Ltd | Heanor | 2009 |
| Colt Haulage Ltd | London | 2021 |
| Colt Line Express Ltd | Barnsley | 2025 |
| Colt Rail Services Limited | London | 2025 |
| Colt UK Coaches Ltd | Sheffield | 2012 |
| Coltek Limited | Ashford | 1992 |
| Coltino Shipping (UK) Limited | London | 2019 |
| Colton Contractors Ltd | Ferryhill | 2024 |
| Colton Plant Hire Ltd | Omagh | 2018 |
| Colts Cabs Limited | Borehamwood | 1991 |
| Coltun Transport Ltd. | London | 2016 |
| Columbia Carisbrooke Maritime Services UK Limited | Cowes | 2025 |
| Colvanbridge Limited | Essex | 1978 |
| Colville Haulage Limited | Basildon | 2017 |
| Colwell & Friend Haulage Limited | Dover | 2015 |
| Colwell Transport Ltd | Sandwich | 2020 |
| Colwick Cars Ltd | Leeds | 2012 |
| Colwick Couriers Ltd | Nottingham | 2023 |
| Colwin Removals Ltd | Alresford | 2019 |
| Colwyn Bay Ltd | Kilkeel | 2021 |
| Colxon Maritime (UK) Limited | London | 2011 |
| Colyer Transport Limited | Colchester | 2011 |
| Colzium Consulting Ltd | Glasgow | 2024 |
| Comac Freight Services Ltd | Stanford-Le-Hope | 2009 |
| Coman Delivery Ltd | Taunton | 2019 |
| Coman Transport Ltd | Luton | 2023 |
| Comanceanu Alexandru Ltd | Dundee | 2024 |
| Comano Driving Ltd | Bristol | 2015 |
| Comardriver.Ltd Limited | Hounslow | 2019 |
| Comat Ltd | Grays | 2007 |
| Combe II Shipping Ltd | London | 2005 |
| Combe III Shipping Ltd | London | 2005 |
| Combe IV Shipping Ltd | London | 2005 |
| Combee Go Rent Ltd | Chichester | 2026 |
| Combined Independents Properties (1990) Limited | London | 1962 |
| Combined Shipping Company Ltd | Meridian Business Park | 2004 |
| Combined Trailer Services Limited | Glastonbury | 2003 |
| Combrav Maritime (UK) Limited | London | 2015 |
| Combs Coaches Limited | Bury St Edmunds | 1958 |
| Comcab (London) Ltd | London | 2007 |
| Come and Go Logistics Ltd | London | 2025 |