| 45 Crag Path Limited | Households | 2002 |
| A Knights Plumbing Ltd | Construction | 2024 |
| A.S.Neill Summerhill CIC | Professional & scientific | 2020 |
| ABC Divinity Property Investor Ltd | Hospitality | 2026 |
| Abc-Divinity Ltd | Health & social care | 2019 |
| Abdec Limited | Construction | 1997 |
| Advent Accounting (Suffolk) Limited | Professional & scientific | 2010 |
| AG Motorsport Development Ltd | Manufacturing | 2025 |
| Aldeburgh Fresh Fish Co Limited | Agriculture & fishing | 2008 |
| Aldeburgh Hotels Limited | Extraterritorial | 1997 |
| Aldringham House Limited | Real estate | 2003 |
| Aldringham Tearoom Ltd | Hospitality | 2020 |
| Amber Investments (Anglia) Ltd | Real estate | 2019 |
| AMT Holdings Ltd | Wholesale & retail | 2015 |
| Anglia Builders Merchants Limited | | 1990 |
| Apple Safety Ltd | Professional & scientific | 2025 |
| Appleton Engineering (Leiston) Ltd | Wholesale & retail | 2012 |
| Aquipu Financial Consultants Limited | Professional & scientific | 2004 |
| Artificial Grass Solutions Suffolk Limited | Wholesale & retail | 2015 |
| Asbac Lighting Limited | Wholesale & retail | 2013 |
| Ashvale Court (Tredegar) Management Limited | Households | 2005 |
| Auspice Consulting Ltd | Professional & scientific | 2017 |
| Baymans CRM Ltd | Construction | 2021 |
| Beacon Lights Limited | Extraterritorial | 2013 |
| Bemak Limited | Other services | 2015 |
| Bevan Court (Tredegar) Management Limited | Households | 2005 |
| Boards N Brews Ltd | Wholesale & retail | 2022 |
| Breaking the Mould Ltd | Manufacturing | 2020 |
| Brightwell Ventures Limited | Real estate | 2006 |
| Brooks Joinery Ltd | Construction | 2020 |
| Butler Logistic Solutions Ltd | Transport & logistics | 2014 |
| C.H. Investigations Limited | Administrative & support | 2020 |
| Cakes and ALE Limited | Hospitality | 2005 |
| Cala Sona Limited | Arts & recreation | 2003 |
| Cardamon Suffolk Ltd | Hospitality | 2026 |
| Cevvo Ltd | Hospitality | 2023 |
| Chemical Dosing Solutions Ltd | Professional & scientific | 2025 |
| Clayton Inns Limited | Hospitality | 2018 |
| Clean BEE (Commercial) Ltd | Administrative & support | 2026 |
| Clean BEE (Suffolk) Ltd | Administrative & support | 2025 |
| Coastal Building Supplies Limited | Wholesale & retail | 2008 |
| Coastal Glazing Suffolk Ltd | Construction | 2023 |
| Colour Bank Services Limited | Construction | 2005 |
| Cosstech Limited | Professional & scientific | 2019 |
| Crane Mead Management Co. Limited | Households | 2000 |
| Creative Curve | Arts & recreation | 2012 |
| Creative Leiston C.I.C. | Health & social care | 2023 |
| D J Knights Engineering Limited | Construction | 2013 |
| D.I.G. Corrugated Machinery Limited | Manufacturing | 1986 |
| D.I.G. Tube Manipulation & Fabrication Limited | Manufacturing | 1988 |
| DA & VJ Holdings Limited | Financial services | 2023 |
| Datafocus I.T. Limited | Information & communication | 2002 |
| David Silver Holdings Limited | Professional & scientific | 2010 |
| David Silver Spares Limited | Wholesale & retail | 1996 |
| David Woodbine Consultancy Limited | Professional & scientific | 2014 |
| DBM Plastering Ltd | Construction | 2021 |
| Dragos Landscape Services Limited | Administrative & support | 2022 |
| Draig Services Limited | Transport & logistics | 2020 |
| Druce Estate & Letting Agents Ltd | Real estate | 2012 |
| East Anglian Motor Management Limited | Other services | 2015 |
| East Coast Builders Ltd | Construction | 2020 |
| East Coast Construction EA Ltd | Construction | 2020 |
| Eastbridge Inn Ltd | Hospitality | 2024 |
| EAT Tasty Ltd | Hospitality | 2024 |
| Eiasu Limited | Manufacturing | 2023 |
| Elimay Homecare Ltd | Health & social care | 2012 |
| Ellis Offshore Limited | Administrative & support | 2012 |
| ELM Tree Capital Ltd | Professional & scientific | 2019 |
| Elysium Homewares Limited | Wholesale & retail | 2022 |
| Emblazonry Ltd | Wholesale & retail | 2023 |
| Equine Restore Ltd | Extraterritorial | 2016 |
| Erica Armistead Ltd | Arts & recreation | 2015 |
| Evesham Court Richmond RTM Company Limited | Households | 2016 |
| F L Readhead Limited | Agriculture & fishing | 2013 |
| Fairweather Holdings Limited | Financial services | 2023 |
| Fellowspainters Ltd | Construction | 2020 |
| Fluffies Hotel Ltd | Agriculture & fishing | 2024 |
| Forwood Production Limited | Manufacturing | 2015 |
| Four Letter Works Limited | Arts & recreation | 2014 |
| Fromus Freehold & Property Management Company Ltd | Real estate | 2020 |
| Funky Fit Ltd | Wholesale & retail | 2020 |
| G & M.B. Reade | | 2003 |
| G Knights Electrical Ltd | Construction | 2002 |
| G. Jarvis and SON Limited | Real estate | 1987 |
| Gant Build Ltd | Construction | 2023 |
| Garway Court (Tredegar) Management Limited | Households | 2005 |
| General DAN Limited | Construction | 2023 |
| GJS Electrical Ltd | Construction | 2013 |
| Glanville House Limited | Manufacturing | 2010 |
| Goose Bros Ltd | Real estate | 2024 |
| Grandwall Limited | Financial services | 2017 |
| Grange Farm Barns Ltd | Households | 2025 |
| GUN Plate Entertainment Limited | Arts & recreation | 2021 |
| H&R Anderson Ltd | Real estate | 2021 |
| Handmade a LA Mode Ltd | Hospitality | 2011 |
| Harrison Leisure Resorts Limited | Hospitality | 2025 |
| Harvey & Co (Pettistree) Ltd | Hospitality | 2026 |
| Hasret Ltd | Hospitality | 2024 |
| Hazlewood Hall Management Company Limited | Households | 2008 |
| Heathfield Court (Tredegar) Management Limited | Households | 2005 |