| 1 RM Strength Sports Limited | Arts & recreation | 2026 |
| 13 Gautrey Road (London) Limited | Real estate | 2008 |
| A Blackdog Event Ltd | Administrative & support | 2017 |
| A J Barham Limited | Agriculture & fishing | 2005 |
| A&K Properties (Suffolk) Limited | Real estate | 2025 |
| A.D.& K.M.Caston Limited | Agriculture & fishing | 1965 |
| Acorn Property (EA) Limited | Real estate | 2024 |
| Adept Manufacturing Limited | Manufacturing | 2024 |
| Adkris Services (East Anglia) Limited | Professional & scientific | 2011 |
| Adrian Waters Limited | Agriculture & fishing | 2013 |
| ADS3 2020 Limited | Financial services | 2020 |
| Alan Curtis Limited | Wholesale & retail | 2021 |
| Albert House (Ipswich) Management Company Limited | Households | 1985 |
| Alberto Accounting Services Ltd | Information & communication | 2011 |
| Albion ENG Ltd | Transport & logistics | 2019 |
| Albion Storage Solutions Ltd | Transport & logistics | 2019 |
| Alde Valley Foods Ltd | Hospitality | 2017 |
| Aldridge Renovations Limited | Construction | 2026 |
| Alison Banham Creative Ltd | Information & communication | 2012 |
| AMP Contractors Ltd | Construction | 2021 |
| Amps & Stephenson Limited | Manufacturing | 2003 |
| Andrew Maskery Associates Limited | Agriculture & fishing | 2008 |
| Angel Podiatry Limited | Health & social care | 2019 |
| Anglia Yacht Brokers Limited | Other services | 1992 |
| Anglian Diamond Drilling Ltd | Construction | 2022 |
| Anglian Door Services Limited | Manufacturing | 2006 |
| Anglo Commercials Ltd | Wholesale & retail | 2024 |
| Anthony Abbott Limited | Professional & scientific | 2002 |
| ARK Property Services Limited | Construction | 2008 |
| Artboxarts CIC | Arts & recreation | 2018 |
| ASD Civil Engineering Consultants Limited | Professional & scientific | 2020 |
| Aspens Jewellers Limited | Wholesale & retail | 2003 |
| ATH Design Ltd | Professional & scientific | 2016 |
| Attik City Country Coast Ltd | Real estate | 2023 |
| Auction House (N & NS) Ltd | Real estate | 2010 |
| Auction House UK Limited | Real estate | 2006 |
| Autoscot Accident and Repair Centre Ltd | Wholesale & retail | 2016 |
| AVANOVA5 Ltd | Wholesale & retail | 2025 |
| B-Fit Halesworth Ltd | Arts & recreation | 2016 |
| B.E. Norman & Sons Storage Limited | Transport & logistics | 2002 |
| Bacchus Beyond Services Ltd | Wholesale & retail | 2023 |
| Bambino Club Ltd | Health & social care | 2019 |
| Band-I Communications Limited | Administrative & support | 2009 |
| Barsham Properties Limited | Real estate | 2019 |
| Baynham-Davies Surveying Ltd | Professional & scientific | 2022 |
| BD Home Improvements Ltd | Construction | 2015 |
| Beacon Hill House Property Company | Real estate | 2002 |
| Bellbird Properties Limited | Hospitality | 2020 |
| Bishop & Marsh Media Limited | Information & communication | 2023 |
| Black Dog Deli Foods Limited | Manufacturing | 2017 |
| Black Dog Deli Ltd | Hospitality | 2021 |
| Blackheath Studio Limited | Information & communication | 2021 |
| Blooms Hall Farms Limited | Agriculture & fishing | 1963 |
| Blue Light Leadership Limited | Professional & scientific | 2024 |
| Blyth Valley Landscaping Limited | Administrative & support | 2017 |
| BOB Knights Ltd | Wholesale & retail | 2002 |
| Bold Edge (Holdings) Ltd | Arts & recreation | 2026 |
| Boomting Bunting Limited | Other services | 2024 |
| Boon Brokers Limited | Financial services | 2022 |
| Boutique 14A Limited | Wholesale & retail | 2016 |
| Bradley Bell Limited | Arts & recreation | 2015 |
| Bramfield Hall Estate Limited | Agriculture & fishing | 2017 |
| Bramfield Meats Ltd | Wholesale & retail | 2014 |
| Brampton Willows Ltd | Wholesale & retail | 2022 |
| Breakforth Mental Health Support Services Limited | Education | 2016 |
| Bressingham Feedstock Company Ltd | Agriculture & fishing | 2017 |
| Brick Kiln Farm (Mells) Ltd | Agriculture & fishing | 2005 |
| Brickit Comps Ltd | Wholesale & retail | 2024 |
| Bridge Star IP Ltd | Hospitality | 2021 |
| Britten Homes Limited | Construction | 2017 |
| Broadway Colours Ltd | Manufacturing | 1997 |
| Browndoor Services Ltd | Professional & scientific | 2016 |
| Brownfield Associates Limited | Administrative & support | 1999 |
| Buck Inn Flixton Limited | Hospitality | 2021 |
| Bure Court Properties 2019 Limited | Hospitality | 2019 |
| Byebrue Boarding Kennels & Cattery Limited | Other services | 2019 |
| C H M Ltd | Information & communication | 1994 |
| C H Mini Digger Hire Limited | Construction | 2012 |
| Cadence Digital Limited | Information & communication | 2023 |
| Caelestis (UK) Limited | Professional & scientific | 2006 |
| Calway Construction Ltd | Construction | 2025 |
| Calway Estates Ltd | Real estate | 2020 |
| Calway Holdings Ltd | Financial services | 2020 |
| Cambridge EDQ Limited | Information & communication | 2013 |
| Camline Cambridge Limited | Construction | 2009 |
| CAN YOU Hear US? C.I.C. | Health & social care | 2013 |
| Captek Limited | Wholesale & retail | 2016 |
| Carl Baldwin Ltd | Professional & scientific | 2019 |
| Carol Shaw Psychotherapy Ltd | Health & social care | 2010 |
| CBF Service Centre Limited | Wholesale & retail | 2012 |
| CBF Tyres Limited | Extraterritorial | 2019 |
| Champain Group Ltd | Financial services | 2022 |
| Champain Landscapes Ltd | Administrative & support | 2018 |
| Chinny's Ltd | Arts & recreation | 2013 |
| Chinny's Outside Catering Ltd | Hospitality | 2023 |
| Chipentree Limited | Construction | 2004 |
| Chris Penny Ceramics Ltd | Manufacturing | 2022 |
| Christchurch Power and Lighting Ltd | Construction | 2013 |
| Chrome Yellow Consulting Limited | Hospitality | 2015 |
| Clarkes Farmers Butchery Ltd | Wholesale & retail | 2014 |