| Suffolk Cabs Limited | Transport & logistics | 2022 |
| Suffolk Car Body Repairs Ltd | Wholesale & retail | 2020 |
| Suffolk Care Academy Limited | Education | 2026 |
| Suffolk Care Association Limited | Information & communication | 2011 |
| Suffolk Carpet Weavers Limited | Administrative & support | 2003 |
| Suffolk Catering Ltd | Hospitality | 2018 |
| Suffolk Ceilings Limited | Construction | 2012 |
| Suffolk Ceramics Limited | Construction | 2007 |
| Suffolk Chamber of Commerce Industry and Shipping Incorporated | Other services | 1884 |
| Suffolk Chippy EN Ltd | Hospitality | 2026 |
| Suffolk Clean Air Ltd | Wholesale & retail | 2021 |
| Suffolk Cleaning Services and Property Management Limited | Households | 2026 |
| Suffolk Coastal Chamber of Commerce Ltd. | Other services | 2015 |
| Suffolk Coastal Housing Services Limited | Professional & scientific | 2011 |
| Suffolk Commercial Construction Ltd | Construction | 2025 |
| Suffolk Community Foundation | Administrative & support | 2005 |
| Suffolk Construction Ltd | Construction | 2023 |
| Suffolk Crafted Ltd | Construction | 2020 |
| Suffolk Creative Limited | Professional & scientific | 2008 |
| Suffolk Cricket Limited | Arts & recreation | 2011 |
| Suffolk Digital Ltd | Information & communication | 2014 |
| Suffolk Dog Town Ltd. | Wholesale & retail | 2017 |
| Suffolk Doors and Windows Limited | Construction | 2018 |
| Suffolk Educational and Training Services Limited | Extraterritorial | 1993 |
| Suffolk Environmental Services CIC | Professional & scientific | 2024 |
| Suffolk Estates Decorators Limited | Construction | 2003 |
| Suffolk Events Limited | Extraterritorial | 2013 |
| Suffolk Family Carers Limited | Health & social care | 1998 |
| Suffolk Family Friends CIC | Administrative & support | 2025 |
| Suffolk Family History Society | Other services | 2001 |
| Suffolk Farmhouse Cheeses Limited | Manufacturing | 2004 |
| Suffolk Felt Roofing Limited | Construction | 2018 |
| Suffolk Financial Business Consultancy Ltd | Professional & scientific | 2019 |
| Suffolk Fire Safety Limited | Other services | 2021 |
| Suffolk Fish and Chips Ltd | Hospitality | 2026 |
| Suffolk Floor Restore Ltd | Administrative & support | 2015 |
| Suffolk Food Hall Limited | Manufacturing | 2006 |
| Suffolk Food Trucks Ltd | Hospitality | 2021 |
| Suffolk Freight Solutions Limited | Information & communication | 2003 |
| Suffolk Garden Games Ltd | Administrative & support | 2026 |
| Suffolk Gardening Service Ltd | Administrative & support | 2017 |
| Suffolk GAS Solutions Ltd | Construction | 2024 |
| Suffolk Glass Repairs Limited | Wholesale & retail | 2019 |
| Suffolk GP Federation C.I.C. | Health & social care | 2007 |
| Suffolk Group Holdings Limited | Construction | 2015 |
| Suffolk Health Associates Limited | Health & social care | 2020 |
| Suffolk Health Ltd | Health & social care | 2019 |
| Suffolk Healthy Living Centre Ltd | Education | 2021 |
| Suffolk Heating Solutions Ltd | Administrative & support | 2016 |
| Suffolk Home Group Ltd | Financial services | 2025 |
| Suffolk Home Properties Ltd | Real estate | 2025 |
| Suffolk Home Renovations Ltd | Construction | 2023 |
| Suffolk Housing Ltd | Real estate | 2024 |
| Suffolk Interiors Limited | Construction | 2008 |
| Suffolk Kitchen & Bathroom Co. Ltd | Construction | 2026 |
| Suffolk Laundrette Ltd | Other services | 2026 |
| Suffolk Leisure Park Estates Limited | Real estate | 2022 |
| Suffolk Leisure Park Limited | Professional & scientific | 1986 |
| Suffolk Loft Solutions Ltd | Construction | 2025 |
| Suffolk Marine Safety Limited | Wholesale & retail | 2000 |
| Suffolk Money Holdings Limited | Financial services | 2019 |
| Suffolk Money Ltd | Financial services | 2011 |
| Suffolk Mortgage Services Limited | Financial services | 2024 |
| Suffolk Motorcycles Limited | Wholesale & retail | 2016 |
| Suffolk Multiple Sclerosis Therapy Centre | Health & social care | 1988 |
| Suffolk Music Therapy Services Limited | Education | 2010 |
| Suffolk Muslim Centre Ltd | Other services | 2023 |
| Suffolk Network Limited | Extraterritorial | 2008 |
| Suffolk News Delivery Limited | Wholesale & retail | 2010 |
| Suffolk Painting & Decorating Ltd | Construction | 2013 |
| Suffolk Play Card Ltd | Wholesale & retail | 2025 |
| Suffolk Premier Microcement Ltd | Construction | 2022 |
| Suffolk Premier Turf Limited | Administrative & support | 2020 |
| Suffolk Prestige Homes Limited | Administrative & support | 2008 |
| Suffolk Probate Services Ltd | Professional & scientific | 2024 |
| Suffolk Property & Maintenance Ltd | Real estate | 2020 |
| Suffolk Property Limited | Real estate | 2015 |
| Suffolk Property Maintenance Limited | Administrative & support | 2016 |
| Suffolk Refugee Support | Health & social care | 1999 |
| Suffolk Refurbs Limited | Construction | 2019 |
| Suffolk Renewables and Heating Supplies Ltd | Professional & scientific | 2021 |
| Suffolk Renovations Ltd | Construction | 2025 |
| Suffolk Residential Limited | Real estate | 2017 |
| Suffolk Rider Training Limited | Education | 2018 |
| Suffolk Rural Enterprises Limited | Wholesale & retail | 2004 |
| Suffolk Rural Housing Limited | Extraterritorial | 1999 |
| Suffolk Saab Limited | Wholesale & retail | 2012 |
| Suffolk Salt Ltd | Manufacturing | 2020 |
| Suffolk School of Samba | Education | 2003 |
| Suffolk Sea Salt Limited | Manufacturing | 2012 |
| Suffolk Security Fencing Ltd | Construction | 2021 |
| Suffolk Security Services Ltd | Administrative & support | 2021 |
| Suffolk Seed Laboratory Limited | Wholesale & retail | 2009 |
| Suffolk Shores Limited | Financial services | 2020 |
| Suffolk Signature Lettings Ltd | Real estate | 2025 |
| Suffolk Sister Solace CIC | Health & social care | 2025 |
| Suffolk SKI Centre Limited(The) | Arts & recreation | 1985 |
| Suffolk Skills Academy Limited | Administrative & support | 2021 |
| Suffolk Smart FIX Ltd | Wholesale & retail | 2025 |
| Suffolk Solar Systems Limited | Construction | 2025 |