| 16549209 Ltd | Gardeners & landscapers | CF3 5QL | 2025 |
| 1st Call Mot & Service Centre Ltd | Garages & mechanics | CF23 9AQ | 2007 |
| 1st Choice Accident Repair Centre (Yeovil) Ltd | Garages & mechanics | CF23 9AQ | 2026 |
| 1st Choice Accident Repair Centre Ltd | Garages & mechanics | CF23 9AQ | 2002 |
| 220 Interiors Ltd. | Joiners & carpenters | CF3 2WA | 2013 |
| 3 Trojans Ltd | Plumbing & heating | CF23 9HU | 2022 |
| 365 Electrical Installations Ltd | Electricians | CF23 8PR | 2011 |
| A Alwaked Construction Ltd | Builders | CF23 7AS | 2023 |
| A Clean Services Ltd | Cleaners | CF23 8RD | 2004 |
| A Grubb Electrical Ltd | Electricians | CF3 4HD | 2014 |
| A J Lia Painting & Decorating Ltd | Painters & decorators | CF3 3BD | 2022 |
| A-Z Cleaning and Moving Ltd | Removals | CF23 7JD | 2026 |
| A1 Motorcare Ltd | Garages & mechanics | CF3 3HG | 1997 |
| Aa&N Ltd | Builders | CF23 6HE | 2025 |
| Abk Constructions Services Ltd | Plasterers | CF3 5RA | 2023 |
| Abt Property Refurbishments Ltd | Builders | CF23 7FB | 2026 |
| Ace Windscreens Ltd | Garages & mechanics | CF23 7EJ | 2026 |
| Adenhart (Wales) Ltd | Painters & decorators | CF23 8RS | 2010 |
| Adl Detailing and Logistics Ltd | Garages & mechanics | CF3 5EA | 2020 |
| Adrian Riley Building Services Ltd | Builders | CF23 6LL | 2014 |
| Advanced Electrical & Fire Ltd | Electricians | CF23 5HL | 2024 |
| Af Mechanical Services Ltd | Plumbing & heating | CF3 3BD | 2022 |
| Agverandas Ltd | Builders | CF3 1YA | 2023 |
| Aj Mills Carpentry Ltd | Joiners & carpenters | CF3 3AG | 2017 |
| Ajc Contractors Ltd | Builders | CF23 8NR | 2018 |
| Akaal Kirpa Construction Ltd | Builders | CF3 3BG | 2026 |
| Aldrebe Constructions Ltd | Builders | CF23 7AR | 2021 |
| Alexis Joinery Ltd | Joiners & carpenters | CF23 9AP | 2023 |
| Allen & Sage Roofing/Building Ltd | Builders | CF3 3NP | 2021 |
| Am Clearance Ltd | Removals | CF23 7ER | 2023 |
| Am Electrical & Training Services Ltd | Electricians | CF23 9DG | 2023 |
| Ambient Air Control Ltd | Plumbing & heating | CF3 2AY | 1998 |
| Amodeo Ltd | Builders | CF23 8RU | 2018 |
| Amrock Electrical Ltd | Electricians | CF23 6PU | 2019 |
| Anies Builders Ltd | Builders | CF23 9HT | 2025 |
| Arc Energy Systems Ltd | Electricians | CF3 4BR | 2026 |
| Artemis Fmc Ltd | Pest control | CF23 9DZ | 2013 |
| As Electrical Solutions Ltd | Electricians | CF3 4BB | 2020 |
| Asf Electrical Ltd | Electricians | CF23 6QT | 2022 |
| Asg Electrical Installations Ltd | Electricians | CF23 6US | 2010 |
| Aspec Building Ltd | Builders | CF23 9FP | 2022 |
| Astharr Aesthetics Ltd | Hair & beauty | CF23 9JD | 2019 |
| Atamate Solutions Ltd | Builders | CF3 5EA | 2011 |
| Atlantic Pacific Marine Ltd | Builders | CF23 9AF | 2010 |
| Attique.Co.UK Ltd | Builders | CF23 7BR | 2024 |
| Autocraft Cardiff Ltd | Garages & mechanics | CF23 9AQ | 2003 |
| Automotive Cardiff Ltd | Garages & mechanics | CF23 9AF | 2016 |
| Avaient Aesthetics Ltd | Hair & beauty | CF23 6SZ | 2022 |
| Avanti Access Solutions Ltd | Builders | CF3 4FF | 2024 |
| Aw Cardiff Construction Ltd | Builders | CF23 7AP | 2025 |
| B & W Electrical (South Wales) Ltd | Electricians | CF23 8AA | 2006 |
| B&S Exterior and Interior Group Ltd | Builders | CF3 5SJ | 2026 |
| B-R Cargo & Removal Services Ltd | Removals | CF3 6AH | 2023 |
| Bailey Building and Roofing Ltd | Roofers | CF23 5HD | 2009 |
| Bamboo Curls Ltd | Hair & beauty | CF23 5NQ | 2026 |
| Barber One Cardiff Ltd | Hair & beauty | CF3 4FH | 2026 |
| Beauty Box Aesthetics (Cardiff) Ltd | Hair & beauty | CF23 9HH | 2021 |
| Bendricks Properties Ltd | Builders | CF23 6SP | 2013 |
| Beynon Plumbing Ltd | Plumbing & heating | CF3 5QW | 2018 |
| Blackrock Construction Ltd | Builders | CF23 6PR | 2019 |
| Blackrock Developments Ltd | Builders | CF23 5ET | 2025 |
| Blake'S Sparkle and Shine Ltd | Cleaners | CF3 3AW | 2025 |
| Blush Hairdressing Ltd | Hair & beauty | CF3 5EA | 2004 |
| Boilerhut Ltd | Plumbing & heating | CF3 2EX | 2013 |
| Bonker'Z Ltd | Hair & beauty | CF3 3EA | 2018 |
| Bow-Wow Boutique and Spa Ltd | Hair & beauty | CF23 9AQ | 2016 |
| Bps Facilities Ltd | Builders | CF23 9AQ | 2010 |
| Bps Group Ltd | Builders | CF23 9AQ | 2022 |
| Brian Harries Building Ltd | Builders | CF3 4DJ | 2022 |
| Bromax Electrical Services Ltd | Electricians | CF3 6WA | 2022 |
| Bryan Electrical Services Team Ltd | Electricians | CF23 6SJ | 2017 |
| C A Davies Ltd | Builders | CF3 6HX | 2025 |
| C and J Maintenance (Cardiff) Ltd | Gardeners & landscapers | CF3 1QA | 2025 |
| C Core Roofing Ltd | Roofers | CF23 8RU | 2026 |
| C James Carpentry & Construction Ltd | Builders | CF3 4AA | 2021 |
| C&M Site Services Ltd. | Electricians | CF23 8AA | 2015 |
| C&M Specialist Installations Ltd | Electricians | CF23 8AA | 2023 |
| C.A.M. Motors Ltd | Garages & mechanics | CF3 1EY | 2005 |
| Call2fix Ltd | Electricians | CF3 3HG | 2016 |
| Cambi Electrical Ltd | Electricians | CF3 4HG | 2025 |
| Camklen Ltd | Cleaners | CF3 5LS | 2015 |
| Campo & Co Developments Ltd | Builders | CF3 5ND | 2026 |
| Car Tech (Cardiff) Ltd | Garages & mechanics | CF23 9AQ | 2019 |
| Cardiff & Vale Valeters Ltd | Cleaners | CF3 4EH | 2024 |
| Cardiff Accident Repair Solutions Ltd | Garages & mechanics | CF3 2EX | 2026 |
| Cardiff Aesthetic Clinic Ltd | Hair & beauty | CF3 4LJ | 2025 |
| Cardiff Asphalt Ltd | Roofers | CF23 6SD | 2022 |
| Cardiff Auto & Mot Centre Ltd | Builders | CF23 9AF | 2026 |
| Cardiff Autoscreens Ltd | Garages & mechanics | CF23 5QZ | 2003 |
| Cardiff Beauty Clinic Ltd | Hair & beauty | CF3 4LJ | 2016 |
| Cardiff Driveways & Patios Ltd | Builders | CF3 3HF | 2024 |
| Cardiff Electrical Services Ltd | Electricians | CF3 3HW | 2022 |
| Cardiff Garage Ltd | Garages & mechanics | CF3 1TH | 2020 |
| Cardiff Loft Boarding Ltd | Builders | CF3 4BB | 2026 |
| Cardiff Mechanical Services Ltd | Electricians | CF3 5NE | 2022 |
| Cardiff Mot Centre Ltd | Garages & mechanics | CF23 9AQ | 2020 |
| Cardiff Permanent Makeup Studio Ltd | Hair & beauty | CF23 6QU | 2020 |
| Cardiff Plumbing Management Ltd | Plumbing & heating | CF23 9HS | 2011 |
| Cardiff Roof Cleaning Ltd | Cleaners | CF23 8LP | 2023 |
| Cardiff Treescapes Arboricultural Contractors Ltd | Gardeners & landscapers | CF23 9DE | 2013 |
| Cardiffremovalandstorage Ltd | Removals | CF3 5PR | 2025 |
| Casa Construct Ltd | Builders | CF3 2TX | 2023 |
| Cassley Autocare Ltd | Garages & mechanics | CF3 2EX | 2015 |
| Celtic Cooling and Heating Ltd | Plumbing & heating | CF23 6UH | 2003 |
| Celtic Recovery Ltd | Garages & mechanics | CF23 8RS | 2001 |
| Cf Pest Solutions Ltd | Pest control | CF3 3AR | 2025 |
| Cf3 Mot & Service Centre Ltd | Garages & mechanics | CF3 1TH | 2025 |
| Cf3 Plumbing & Heating Ltd | Plumbing & heating | CF3 4BY | 2026 |
| Chapel-Oak Developments Ltd | Builders | CF3 0UJ | 2016 |
| Citywide Auto Centres Ltd | Garages & mechanics | CF3 5EA | 2002 |
| Cjs Specialist Cleaning Ltd | Cleaners | CF3 4BD | 2026 |
| Cladding & Construction Ltd | Builders | CF3 5EA | 2016 |
| Cld Facilities Services Ltd | Cleaners | CF3 3PB | 2021 |
| Cleanology Group Ltd | Cleaners | CF23 8NP | 2026 |
| Clear Choice Developments Ltd | Builders | CF23 5BY | 2015 |
| Climate Control Cardiff Ltd | Plumbing & heating | CF3 4FE | 2026 |
| Cloud 9 Removals Ltd | Removals | CF23 9AF | 2019 |
| Cmc Construction Ltd | Builders | CF3 2TX | 2013 |
| Coast & Code Ltd | Cleaners | CF3 3HL | 2020 |
| Concept Sunbeds Ltd | Hair & beauty | CF23 9JD | 2015 |
| Containanddrain Ltd | Plumbing & heating | CF23 6LJ | 2019 |
| Cookmech Ltd | Plumbing & heating | CF23 9HY | 2024 |
| Cook’S Heating and Cooling Ltd | Plumbing & heating | CF3 4BE | 2023 |
| Corp Fire Protection Ltd | Builders | CF3 2TU | 2024 |
| Cowley Ceilings Ltd | Builders | CF23 5AP | 2005 |
| Cp Electrical Cardiff Ltd | Electricians | CF3 5TJ | 2024 |
| Crash Bang Wallop Crash Repair Ltd | Garages & mechanics | CF3 1TH | 2017 |
| Crean Electrical Ltd | Electricians | CF3 4FE | 2020 |
| Cs Hair Design Ltd | Hair & beauty | CF23 5NG | 2012 |
| Csb Electrical Services Ltd | Electricians | CF3 4AH | 2019 |
| D A L Developments Ltd | Builders | CF23 9AP | 2024 |
| D M C Vehicle Services Ltd | Garages & mechanics | CF23 5HP | 2006 |
| D S Roberts Construction Ltd | Builders | CF3 4TE | 2015 |
| D.P. Tarmacadam Ltd | Builders | CF3 3BQ | 2019 |
| Damp Defence Ltd. | Builders | CF23 8NA | 2022 |
| Dan. K Electrical Solutions Ltd | Electricians | CF3 4JS | 2016 |
| Das Construction Service Ltd | Builders | CF3 3BA | 2012 |
| Davies Brothers (Holdings) Ltd | Builders | CF3 5EA | 2009 |
| Deck-Rite Flooring Ltd | Flooring & tiling | CF3 3JE | 2002 |
| Deen Construction Ltd | Builders | CF23 6PD | 2005 |
| Derrick&Co. Plastering and Rendering Ltd | Plasterers | CF3 4EG | 2024 |
| Dij Electrical Ltd | Electricians | CF3 4HL | 2019 |
| Dlm Ltd | Gardeners & landscapers | CF23 8HW | 2024 |
| Dlm Tree Services Ltd | Gardeners & landscapers | CF23 8RU | 2023 |
| Dml Property Solutions Ltd | Builders | CF23 7BP | 2026 |
| Downlands Way Residents Ltd | Gardeners & landscapers | CF3 3BY | 2020 |
| Dr Kathryn Aesthetics and Skincare Ltd | Hair & beauty | CF23 5NW | 2021 |
| Dreamspace Design & Construction Ltd | Builders | CF23 6ET | 2024 |
| Drojan Commercial Window Cleaning Ltd | Cleaners | CF3 5EA | 2019 |
| Dumont Ltd | Roofers | CF23 6JR | 2015 |