| 05805152 Limited | Construction | 2006 |
| 10-UPS Management Co. Limited | Administrative & support | 2005 |
| A M J Garage Services Limited | Wholesale & retail | 2015 |
| Aber GAS Limited | Wholesale & retail | 1999 |
| Aber Shock and Detonation Research Limited | Professional & scientific | 2006 |
| Aberteifi Rail & Utilities Ltd | Administrative & support | 2025 |
| Aberystwyth Soft Drinks Ltd | Wholesale & retail | 2016 |
| Aberystwyth Tech Solutions Limited | Wholesale & retail | 2020 |
| Alwyn Evans Ltd | Manufacturing | 2011 |
| Andrew Cave Bricklaying Limited | Construction | 2004 |
| Aneurin CYF | Arts & recreation | 2006 |
| Anthony L Davies Limited | Construction | 2014 |
| Argraff Ltd | Information & communication | 2004 |
| Assured Care Solutions Ltd | Administrative & support | 2013 |
| Banc Sion Cwilt Joinery Limited | Construction | 2006 |
| Barri Davies Electrical Limited | Construction | 2003 |
| Brodyr James Cyfyngedig | Transport & logistics | 2003 |
| Bwlchwernen Fawr Ltd | Wholesale & retail | 2025 |
| C.B. Environmental Ltd. | Water & waste | 1998 |
| Cambrian Tyres Ltd. | Wholesale & retail | 1999 |
| Castaway Cardigan Ltd | Wholesale & retail | 2003 |
| Catalyst Associates Limited | Professional & scientific | 1992 |
| CEI Carpets Limited | Construction | 2014 |
| Clarach Bay Services Limited | Water & waste | 2007 |
| Cleo's Aberteifi Cyfyngedig | Wholesale & retail | 2002 |
| Cliand Computers Ltd | Information & communication | 2002 |
| Clwb Trotian Tregaron Cyfyngedig | Arts & recreation | 2003 |
| CMD Talent Consulting Ltd | Extraterritorial | 2012 |
| Coco & Scamp Kennels Ltd. | Agriculture & fishing | 2021 |
| CVR Migration Solutions Ltd | Information & communication | 2015 |
| Cware Crug-Yr-Eryr CYF | Mining & quarrying | 2003 |
| Cwilt Cyfyngedig | Construction | 2004 |
| Cwmnant Ltd | Wholesale & retail | 1998 |
| Cwmni Theatr Arad Goch | Arts & recreation | 1989 |
| Cwmrhys Cottage Ltd | Professional & scientific | 2026 |
| Cwtsh Aberystwyth Limited | Hospitality | 2019 |
| Cwtsh Properties Limited | Real estate | 2025 |
| Cyfri Cyfyngedig | Professional & scientific | 2000 |
| Cymdeithas Mudiadau Gwirfoddol Ceredigion / Ceredigion Association of Voluntary Organisations | Other services | 1997 |
| D & a F Gordon Ltd | Wholesale & retail | 2002 |
| D J T Vans Limited | Wholesale & retail | 2015 |
| D Thomas and Co (Wales) Ltd | Professional & scientific | 2013 |
| D.R. & M.A. Price Limited | Manufacturing | 2003 |
| Derek Ford Construction Ltd | Construction | 2006 |
| Derrick Hughes & Co. Ltd | Wholesale & retail | 2012 |
| Distance Technology Ltd | Other services | 2019 |
| Diva Nails Aber Ltd | Other services | 2025 |
| Dragon F1 Power Boats Limited | Extraterritorial | 2004 |
| DTS Tree Services Ltd. | Other services | 2021 |
| EER Ltd | Extraterritorial | 2024 |
| Electric RAT Productions Limited | Information & communication | 2016 |
| Evans Body Repairs Limited | Wholesale & retail | 2003 |
| Feel Good Facilities Limited | Hospitality | 2025 |
| Ffyniant Limited | Administrative & support | 2002 |
| Gamebuildr Ltd | Information & communication | 2016 |
| Getsio Homes Ltd | Construction | 2021 |
| Guided Pilgrimage | Administrative & support | 2020 |
| H D & C Organic Eggs Ltd | Agriculture & fishing | 2007 |
| H Matthews & SON Limited | Agriculture & fishing | 2005 |
| Heatherdale Holidays (Clarach Bay) Limited | Hospitality | 1983 |
| Hoffnant Stores Ltd | Wholesale & retail | 2003 |
| Hughes Tractors and Plant Ltd | Administrative & support | 2021 |
| Hunter Family Properties Limited | Real estate | 2002 |
| Ieuenctid Cambria Youth Limited | Education | 2006 |
| Jamson Concrete Limited | Manufacturing | 2025 |
| Jeffrey Pugh Limited | Wholesale & retail | 1997 |
| Jenkins and Rees CYF | Agriculture & fishing | 2006 |
| L.A.S. Recycling Limited | Water & waste | 1992 |
| L.A.S. Waste Limited | Extraterritorial | 2002 |
| Lakewest Limited | Agriculture & fishing | 1998 |
| LAS Administrative Services Ltd | Administrative & support | 2024 |
| LAS Holdings Limited | Professional & scientific | 2001 |
| LB Makeup Limited | Other services | 2021 |
| Leisure Escapes Limited | Hospitality | 2019 |
| Llinos Hair Care Limited | Other services | 2005 |
| Lloyd Brothers Construction Limited | Construction | 2002 |
| M&E Blinds Ltd | Manufacturing | 2007 |
| Mega Tyres Ltd | Wholesale & retail | 2007 |
| Mentera | Professional & scientific | 1991 |
| Mentratech Limited | Administrative & support | 2006 |
| Mid-Wales MOTORWAYS(1963)LIMITED | Transport & logistics | 1963 |
| Mindful Communications Limited | Arts & recreation | 2012 |
| Minelen Limited | Real estate | 1997 |
| MJS Facilities Management Limited | Administrative & support | 2019 |
| Morgan & Jones Limited | Agriculture & fishing | 2005 |
| Morgan's Properties (Wales) Limited | Real estate | 2007 |
| Morris Bros Kitchens Ltd | Wholesale & retail | 2004 |
| Mossman Farming Limited | Agriculture & fishing | 2011 |
| Natural Feeds & Fertilisers Ltd | Manufacturing | 2006 |
| Northfield Enterprises Ltd | Hospitality | 2005 |
| Optimim Ltd | Information & communication | 2006 |
| P.A. Carruthers Ltd | Construction | 2006 |
| Parcau Farms Ltd | Agriculture & fishing | 2022 |
| Pencefn Feeds Limited | Wholesale & retail | 2002 |
| Plas Padarn Management Company Limited | Extraterritorial | 2004 |
| Protherics UK Limited | Manufacturing | 1997 |
| Provenance & GI Consultancy Ltd | Professional & scientific | 2020 |
| R Gwyndaf Jenkins Limited | Administrative & support | 2003 |
| Rees Astley (Holdings) Limited | Professional & scientific | 2007 |
| Rees-Evans Investments Limited | Financial services | 2026 |