| Colenko Secured Investments 2 Ltd | London | 2024 |
| Colenko Secured Lending 1 Ltd | London | 2022 |
| Colenko Secured Lending 2 Ltd | London | 2024 |
| Colenso Capital UK Limited | Frome | 2019 |
| Colenso Holdings Limited | York | 2017 |
| Coleridge Capital Limited | London | 2004 |
| Coleridge Wealth Management Limited | Clevedon | 2019 |
| Coles-Porter Holding Ltd | Kingston Upon Thames | 2026 |
| Colesco Capital Ltd. | London | 2023 |
| Colesgrove Trustees Limited | Hoddesdon | 1965 |
| Coleshill Capital Limited | High Wycombe | 2015 |
| Coleshill Mortgage Services Limited | Burton On Trent | 2006 |
| Colet Care Ltd | Denbigh | 2016 |
| Coletta Group Ltd | Wakefield | 2022 |
| Colette Hall Mortgage Finance Ltd | Maidstone | 2018 |
| Colewood Holdings Limited | Stockton On Tees | 2018 |
| Colfam Limited | London | 2025 |
| Colfax Corporate Limited | Sandy | 2020 |
| Colfax Corporate Services Limited | Sandy | 2020 |
| Colfax ND One Limited | Sandy | 2021 |
| Colfax ND Two Limited | Sandy | 2021 |
| Colfax Share Trustees Limited | Sandy | 2021 |
| Colford Holdings Limited | Glenrothes | 2020 |
| Colgate-Palmolive Finance (UK) Limited | Woking | 1993 |
| Colhoun Holdings Ltd | Strabane | 2023 |
| Colibri Group Limited | Reading | 2019 |
| Colibrix Limited | London | 2020 |
| Coligo Capital Limited | Ilford | 2022 |
| Coligo Holdings Limited | Ilford | 2022 |
| Colin Adams Motor Parts Holdings Limited | Newtownards | 2021 |
| Colin Bibra Services Limited | London | 2014 |
| Colin Campbell, Limited | | 1919 |
| Colin Chadburn Financial Planning Ltd | Barnsley | 2019 |
| Colin Froggatt Financial Planning Ltd | Stourport-On-Severn | 2013 |
| Colin Grant Financial Services Limited | Arbroath | 2020 |
| Colin Hall Consulting Limited | Leicester | 2021 |
| Colin Hardy & Co. Limited | Devon | 1976 |
| Colin Harris Holdings Limited | Milton Keynes | 2019 |
| Colin Hull Financial Services Ltd | Colchester | 2009 |
| Colin Leech Limited | Eastleigh | 2021 |
| Colin Murray Development Limited | Paisley | 1989 |
| Colin Ritchie Swinney Limited | Dorking | 2014 |
| Colin Ross Financial Planning Ltd | Ipswich | 2017 |
| Colin Spreckley Limited | London | 2012 |
| Colin Tart Holdings Ltd | Hertfordshire | 2024 |
| Colin Tunstall Limited | St. Helens | 2015 |
| Colin Watts Enterprises Ltd | Great Yarmouth | 2023 |
| Colin West Mortgage Solutions Limited | Fordingbridge | 2016 |
| Colina Property Services Holdings Limited | Mansfield | 2022 |
| Colindale Finance Corporation Limited | London | 1985 |
| Colindale Investments Ltd | London | 2021 |
| Colindale Living Ltd | London | 2025 |
| Colindale Ltd | Faversham | 2025 |
| Colint Limited | Enfield | 2022 |
| Colinwell Masonry Products Holdings Limited | Belfast | 2021 |
| Colinwell Properties Holdings Limited | Holywood | 2021 |
| Coliseum Capital Industrial Limited | Shrewsbury | 2015 |
| Coliseum Capital Limited | Shrewsbury | 2014 |
| Colivier Services Limited | London | 2022 |
| Colkirk Underwriting Limited | London | 1998 |
| Coll Holdings Limited | Maidenhead | 2025 |
| Coll Scaffold Holdings Ltd | Bristol | 2023 |
| Collabgenics Limited | Bury St. Edmunds | 2026 |
| Collaborapay Limited | Manchester | 2024 |
| Collaborate Funding Limited | Glasgow | 2014 |
| Collaborate Technologies Ltd | London | 2026 |
| Collaboration Circle | London | 2024 |
| Collaborative Business Solutions (U.K.) Limited | Droitwich | 2019 |
| Collaborative Capital Limited | London | 2015 |
| Collaborative Holdings Ltd | Bath Road, Kettering | 2023 |
| Collaborative Paraplanning Solutions Ltd | Benfleet | 2022 |
| Collaborative Solutions Group Ltd | Bury St. Edmunds | 2026 |
| Collaborative Wealth Limited | Derby | 2019 |
| Collabot Limited | London | 2018 |
| Collabria Holdings Limited | Frome | 2025 |
| Collabuk Limited | Bury Saint Edmunds | 2022 |
| Collam FP Ltd | Rochdale | 2017 |
| Collar Mortgage Services Limited | Weston-Super-Mare | 2019 |
| Collateral (NO1) Ltd | London | 2025 |
| Collateral (UK) Limited | Liverpool | 2014 |
| Collateral Sales Limited | Liverpool | 2016 |
| Collateral Security Trustee Limited | Liverpool | 2016 |
| Collclad Ltd | Brierley Hill | 2017 |
| Collcon Projects Holdings Ltd | Preston | 2018 |
| Colleary Group Limited | Seaford | 2019 |
| Colleco Limited | Wantage | 2024 |
| Collected Capital Ltd | Harrow | 2018 |
| Collection POT Holdings Limited | Northampton | 2022 |
| Collection POT Technology Limited | Northampton | 2024 |
| Collectiv Holdings Limited | Salisbury | 2023 |
| Collective Capital Limited | London | 2018 |
| Collective Care Group Ltd | London | 2021 |
| Collective Concepts Group Ltd | Brighton | 2024 |
| Collective Cover Ltd | London | 2025 |
| Collective Decisions Ltd | Milton Keynes | 2002 |
| Collective Finance Ltd | Ilford | 2026 |
| Collective Financial Planning Limited | Lichfield | 2012 |
| Collective Green EOT Limited | Thirsk | 2025 |
| Collective Group Holdings Limited | London | 2022 |
| Collective Mortgages Ltd | London | 2024 |