| Compare My Credit Score Limited | Ferndown | 2012 |
| Compare Parts Limited | New Eltham | 2013 |
| Compare Smart Devices Limited | Loughton | 2026 |
| Compare the Couriers Limited | London | 2013 |
| Compare the Merchants Limited | Eastbourne | 2015 |
| Compare the Utility Limited | Felixstowe | 2020 |
| Comparemyoffice Limited | Llanelli | 2012 |
| Compass Aggregates Limited | Birmingham | 1952 |
| Compass Catering Services Limited | Birmingham | 1980 |
| Compass Coffee Ltd | Bristol | 2024 |
| Compass Contract Services Limited | Rubery Birmingham | 1978 |
| Compass Finance Claims Limited | Cambridge | 2010 |
| Compass for International Trading Limited | Manchester | 2026 |
| Compass for Life Limited | Hereford | 2015 |
| Compass Group Trustees Limited | Chertsey | 1991 |
| Compass Healthcare Group Limited | Chertsey | 1948 |
| Compass House Group Limited | London | 2019 |
| Compass International Trade Co., Ltd | London | 2024 |
| Compass London Independent Limited | Southport | 2022 |
| Compass Marine Services Limited | Wirral | 1998 |
| Compass Nominee Company Number Fourteen Limited | Chertsey | 1961 |
| Compass North West Limited | Ormskirk | 2025 |
| Compass Office Cleaning Services Limited | Rubery Birmingham | 1996 |
| Compass Overseas Services Limited | Chertsey | 1975 |
| Compass Pictures Limited | Coventry | 2020 |
| Compass Planning and Design Limited | Rubery Birmingham | 1947 |
| Compass Quest Limited | Chertsey | 1997 |
| Compass Road Services Limited | Rubery | 1989 |
| Compass Secretaries Limited | Chertsey | 2000 |
| Compass Security Limited | Park Rubery Birmingham | 1965 |
| Compass Services for Hospitals Limited | Rubery Birmingham | 1962 |
| Compass Site Engineering Services Limited | Doncaster | 2015 |
| Compass Site Services Limited | Chertsey | 1961 |
| Compass Surveys & Mapping Limited | Alexandria | 2009 |
| Compass Travel (Wales) Limited | Treorchy | 2012 |
| Compass Wealth Ltd | Saffron Walden | 2024 |
| Compassionate Cremations Limited | Lowestoft | 2024 |
| Compconsult Limited | Harrow | 2020 |
| Compdir Marine Limited | Woodford Green | 1998 |
| Compelo Limited | Hull | 2007 |
| Compelo Media Ltd | Hull | 2010 |
| Compendium Wine Merchants Limited | Belfast | 1975 |
| Comperio Research Limited | London | 2013 |
| Compers News Limited | Ross-On-Wye | 2005 |
| Competence Center Limited | Hove | 2005 |
| Competition Management Services Co. Limited | London | 1973 |
| Competition Silencers (International) Limited | Potters Bar | 1983 |
| Competition Yard Limited | Cambridgeshire | 2004 |
| Competitise Ltd | London | 2020 |
| Competitive Ship Brokers Limited | Chelmsford | 2016 |
| Compine Developments (Wootton) Limited | High Wycombe | 1990 |
| Complaint Handling Services Limited | Leicester | 2010 |
| Complaint Ninja Limited | Leigh | 2023 |
| Complaints and Disputes Resolution Limited | Salisbury | 2007 |
| Complement Interiors Limited | Beaminster | 2003 |
| Complementary Company Limited | London | 2002 |
| Complete Acoustics Solutions Ltd | Manchester | 2019 |
| Complete Aircraft Leasing Limited | Exeter | 2020 |
| Complete Aircraft Purchases Limited | Exeter | 2020 |
| Complete Aircraft Recycling Limited | Exeter | 2020 |
| Complete Building Services Ltd | Basingstoke | 2005 |
| Complete Building Solutions (Much Wenlock) Limited | Much Wenlock | 2021 |
| Complete Chimneys Scotland Limited | Dunfermline | 2018 |
| Complete Circle Training Solutions Limited | Wakefield | 2018 |
| Complete Cleaning and Clearance Ltd | Wallingford | 2019 |
| Complete Cleaning Services (Scotland) Limited | Glasgow | 2007 |
| Complete Clothing Limited | Palmers Green | 2017 |
| Complete Company Solutions Ltd | Bradford | 2013 |
| Complete Construction Services (Scotland) Limited | Glasgow | 2022 |
| Complete Control (2020) Ltd | Brighton | 2020 |
| Complete Cottage Holidays Limited | Altrincham | 2009 |
| Complete Developments 1 Ltd | Coventry | 2023 |
| Complete Earth Limited | Cardiff | 2013 |
| Complete Environmental Management Limited | Glasgow | 2016 |
| Complete Fabrications 1 Ltd | Coventry | 2023 |
| Complete Fire and Security Solutions Limited | Glasgow | 2023 |
| Complete Foodservice Limited | Newton Abbot | 2004 |
| Complete Formations Limited | London | 2008 |
| Complete Glass and Glazing Ltd | Enfield | 2021 |
| Complete Heating Bathroom & Tile Ltd | Redditch | 2015 |
| Complete Hi-Fi Sound & Vision Limited | Twickenham | 2014 |
| Complete I.T. Limited | High Wycombe | 2022 |
| Complete Limited | Southampton | 2015 |
| Complete Maintenance Southwest Interiors Ltd | Plymouth | 2021 |
| Complete Move Removals Limited | Covell Cross | 2001 |
| Complete Network Solutions Limited | Chester | 2006 |
| Complete Neuro Physio Limited | Wolverhampton | 2020 |
| Complete Parts Limited | Redditch | 1985 |
| Complete Pharmacy Care Limited | Oldham | 2010 |
| Complete Pixels Limited | Woking | 2021 |
| Complete Plastics Limited | Redditch | 2002 |
| Complete Production Solutions Limited | Christchurch | 2001 |
| Complete Shopfront Solutions Limited | Brierley Hill | 2014 |
| Complete SKI Limited | Romsey | 2008 |
| Complete Traffic Control Limited | Bristol | 2012 |
| Complete Unique Interiors UK Limited | Lancashire | 2024 |
| Complete Urban Solutions Limited | Basildon | 2000 |
| Complete Vending Services Limited | Bromsgrove | 1999 |
| Complete Voice & Data Limited | Dukinfield | 2014 |
| Completely Cleansed Ltd | Upminster | 2021 |