| Coalfield Estates Holdings Limited | Salford | 2025 |
| Coalition for Epidemic Preparedness Innovations UK Limited | London | 2017 |
| Coalition for Marriage Limited | Newcastle Upon Tyne | 2011 |
| Coalport Skin Ltd | Much Wenlock | 2022 |
| Coalville Rugby Football Club Properties Limited | Whitwick | 2000 |
| Coalville Tanning Limited | Coalville | 2024 |
| Coanda Limited | Clevedon | 2008 |
| Coanectasin Ltd | Harrow | 2025 |
| Coap Online Ltd | Hailsham | 2021 |
| Coapchain Group Ltd | Grays | 2015 |
| Coars (N.E.) Limited | Preston | 2009 |
| Coars Limited | Riversway | 1997 |
| Coast & Copper Salon Limited | Bridlington | 2025 |
| Coast & Country Cleaning Ltd | Llandudno Junction | 2023 |
| Coast 2 Coast Linen Hire Ltd | Penzance | 2024 |
| Coast and Mountain Ltd | Aviemore | 2022 |
| Coast Carpet Cleaners Limited | Ferndown | 2014 |
| Coast Consulting Limited | Woodbridge | 2009 |
| Coast Facilities Ltd | Chelmsford | 2015 |
| Coast Furnishings Ltd | Southampton | 2014 |
| Coast Hair and Beauty Limited | Lancs | 2005 |
| Coast Hair Chorley Ltd | Wigan | 2018 |
| Coast Hair Ltd | Cardiff | 2016 |
| Coast Inventories Limited | Ivybridge | 2024 |
| Coast Marine Consultants Limited | Scarborough | 2014 |
| Coast Marine Limited | East Cowes | 2011 |
| Coast Massages Limited | Southampton | 2024 |
| Coast Projects and Developments Limited | Dundee | 2021 |
| Coast Student Inventories Limited | Ivybridge | 2025 |
| Coast to Coast Motorcycles Limited | Belper | 2019 |
| Coast to Coast Water Safety Ltd | Kingsbridge | 2019 |
| Coast to Country Retreats Limited | Saundersfoot | 2024 |
| Coast Training Academy Limited | Dundee | 2021 |
| Coast Yachts Ltd | Cardiff | 2016 |
| COAST2COAST Automotive Ltd | Buckley | 2018 |
| Coastal and Ocean Engineering Limited | Whiteley Bank | 2006 |
| Coastal Baptist Limited | Belfast | 2024 |
| Coastal Bliss Spa Limited | Helston | 2024 |
| Coastal Cabs Ltd. | Aberdeen | 2017 |
| Coastal Canine Ltd | Hartlepool | 2025 |
| Coastal Coaching (Sussex) Limited | Arundel | 2020 |
| Coastal Concierge Ltd | Leighton Buzzard | 2019 |
| Coastal Cottages Ltd. | Haverfordwest | 1980 |
| Coastal Creative Services Ltd | Saltcoats | 2022 |
| Coastal Crown Ltd | London | 2025 |
| Coastal Customs Ltd | Weymouth | 2017 |
| Coastal Cutting Boards Limited | Southend-On-Sea | 2022 |
| Coastal Data Systems Limited | Broadstairs | 1995 |
| Coastal Dreams Limited | Salford | 2018 |
| Coastal Event Styling Ltd | Bournemouth | 2017 |
| Coastal Glow Beauty & Aesthetics Ltd | Faversham | 2024 |
| Coastal Glow Limited | Lymington | 2025 |
| Coastal Groomers Limited | Clacton-On-Sea | 2021 |
| Coastal Inspections Limited | Liverpool | 2018 |
| Coastal Laundry & Cleaning Services Ltd | Lossiemouth | 2024 |
| Coastal Laundry Services Limited | Plymouth | 2023 |
| Coastal Learning and Lifestyle Services Ltd | Pwllheli | 2025 |
| Coastal Linen Hire Limited | London | 2025 |
| Coastal Living Property Management Limited | Newton Abbot | 2014 |
| Coastal Mowers & Plant Limited | Dover | 2026 |
| Coastal Plumbing and Heating South Wales Ltd | Barry | 2023 |
| Coastal Skinthetics Limited | Poole | 2015 |
| Coastal Stamp Auctions Limited | Burgess Hill | 2017 |
| Coastal Towbar Services Limited | St. Asaph | 1998 |
| Coastal Trading Limited | Dawlish | 2019 |
| Coastal Wedding and Event Hire Limited | Wellingborough | 2017 |
| Coastal-Aesthetics Ltd | Nairn | 2025 |
| Coastbrae Limited | Glasgow | 2006 |
| Coastland Computers Limited | Haverfordwest | 2003 |
| Coastlands Church Ltd | Worthing | 2005 |
| Coastline Building Surveys Ltd | Worthing | 2021 |
| Coastline Catering UK Ltd | Hook | 2021 |
| Coastline Vineyard Church | Bournemouth | 2015 |
| Coastside Properties Limited | London | 2016 |
| Coat & Comb Ltd | Canonbie | 2025 |
| Coatden Limited | Stafford | 2022 |
| Coates Events Limited | Liverpool | 2006 |
| Coates Property Investments Limited | Sarisbury Green | 2021 |
| Coates Training Ltd | Liverpool | 2008 |
| Coating Consultancy OIL & GAS Ltd | London | 2020 |
| Coating Plant Ltd | Mold | 2025 |
| Coatings Technology Ltd | Wickford | 2016 |
| Coats and Tails Ltd | Gloucester | 2019 |
| Coats Events Limited | Paisley | 2020 |
| Coattails Ltd | Poole | 2026 |
| COB1234 Ltd | Glasgow | 2024 |
| Coba Dog Walking Ltd | Shipley | 2025 |
| Coba Education Ltd | Northampton | 2012 |
| Coba Limited | Lancashire | 2003 |
| Cobal Ltd | Telford | 2019 |
| Cobalt Development Services Limited | London | 2004 |
| Cobalt Hill Ltd | Brighton | 2014 |
| Cobalt Institute | London | 1991 |
| Cobalt Massage Ltd | London | 2026 |
| Coban & James Limited | Swanley | 2021 |
| Cobane Hair Ltd | Stockport | 2024 |
| Cobbetts View Management Company Limited | Newbury | 2010 |
| Cobbinshaw Angling Association Ltd | West Calder | 2017 |
| Cobbler ELF Ltd | Rainham | 2017 |
| Cobbler John Limited | Cumbria | 2003 |